The guide's talk about Ermac is rather false. Only a bad Ermac would play the way described. I main Sheeva, Noob Saibot, Jax, Skarlet, Quan Chi, Shang Tsung, and Ermac. My best being Ermac and Shang Tsung. A knowledgeable Ermac will uppercut your jump to start a massive juggle ranging from 45% to 55% no meter. A knowledgeable Ermac will pressure Sheeva more, because Sheeva, Reptile, Shang Tsung, Sub Zero, and Liu Kang can easily outzone Ermac. Ermac's primary strength against Sheeva is his stagger combos, and no, I'm not just talking '3-1, 3-1, 3-1-2' which is what every half-witted Ermac would do.
Your best strategy against Ermac as Sheeva, is to make use of fireballs, and to be VERY aware of Ermac's anti-air capabilities. Use her teleport to get behind Ermac, and frametrap him with your Back Forward 3 grab. Ermac is a mind-game character, often a good Ermac will cancel out of a combo with a levitate, and hit you with an airprojectile if you try to counter. Block low against Ermac, as his only medium is quite useless. However, if you block high, an Ermac will immediately stagger you using his F-4 double kick, and frametrap the living hell out of you. Ermac is an extraordinarily good rush down character. All of his combos either stagger, or start a massive juggle, and they all can be interrupted to start a juggle. His 1-2-1 is not to be underestimated either, along with the 3-1-2, and with proper use, it makes poking impossible. Your only way to beat a knowledgeable Ermac with Sheeva is to meter manage to use her armor. If he starts charging his unblockable, use your armored forward grab, otherwise, dash BACKWARDS if you don't have meter. If you try to lowpoke, he can dash backwards and lift you, if you try to jump out of it, he can jump-kick teleport you, if you try anything else, he can dash forward and 3-1 lift you. Just dash backwards, and punish for safety, otherwise, use an armored grab.
As for getting passed Ermac's push, just stay slightly beyond jump distance, bait it out, and jump directly over it. Shang Tsung and Ermac's combined weakness, is that their wakeups are beyond terrible. You can easily jump directly over Shang's Soul steal, and punish. You can also easily jump over Ermac's push, and lift, for a JiP. However, some occasions when Ermac is waking up, it will reach you high in the air, this is usually because you are jumping and are too close, and too far from the safe zone around Ermac. When you knock Ermac to the ground, it is generally a good idea to immediately block, or just jump over, for the only way he can punish your jump over, is to use a teleport, and you can cross-kick it quite easily. Remember, your projectile enhanced, has armor, his, does not. If you get into a trading match with Ermac at fullscreen, just enhance a projectile, you'll absorb his, he'll get knocked to the ground or if you fail to time it and he blocks, it will buy you time. As soon as it hits, either jump teleport behind to reverse his controls, or toss another fireball.
Ermac's 1-2-1, hits high, mid, high. (punch punch punch)
Ermac's 3-1-2, hits mid, high, mid. (kick punch punch)
Ermac's 3-3, hits mid, mid. (slow kick kick)
^ Highly useful for avoiding his frametraps.
Also, some Ermacs, such as myself, will interrupt his Back 1-1-4 and instead perform Back 1, Forward 4, which is a sort of mind rape. You see, when people see his Back-1 when his fists are coming down, it looks very much like a medium, OR they think they are safe, so they just block high. Ontop of that, Ermac's F-4 when used in conjunction, is incredibly hard to notice until it is too late, so you get an easy stagger. He can also cancel out into an unblockable, but that just depends on your reaction time. Also, do not underestimate Ermac's standard sweep kick. A trick I do against Sheeva, Skarlet, Baraka, and Reptile, is to perform the sweep kick, wait until you are just starting to get up, and perform his hopping medium. Reptile's dash wakeup will go directly passed with no damage, his slide will be hit by the medium unless it's enhanced, and he can't low poke it, or tech out of it. Baraka can only use his chop chop, but no intelligent Baraka would do so, since it is incredibly unsafe. Skarlet can't do anything unless it's an enhanced slide, which makes it a tad risky. Sheeva can't do anything except block high, her back forward 3 will land too late and miss, her medium grab will land too early and miss, and her jump unless enhanced will be caught. Plus if you try to jump out of it, using armor, Ermac will have an already-timed uppercut capability to start a juggle. The only thing she can do is use an enhanced projectile, which is incredibly unsafe, and at the time, no one would really think about it.
So yeah, that's my perspective on the Sheeva-Ermac matchup, I hope this bit of insider Ermac info will help you.
Final note, I disagree that 'Kabal is Sheeva's worst matchup' as I gathered from the guide, Shang Tsung is Sheeva's worst match up, then Mileena, then Kano. Sheeva and Quan Chi if they didn't have one or two characters that they just simply cannot beat, they would be the best characters in the game. However, Sheeva cannot beat a decent Shang Tsung, and it is impossible for Quan Chi to beat a decent Baraka.
i would like to contribute my sheeva guide. it is not as flashy, but it has some good information and maybe a combo or two not in your comprehensive collection. i hope it will compliment yours. here it is: