Fellow johnnies, I'm starting to get frustrated with the sub zero mu. I tend to choose show stopper var, especially if it's thin ice or avalanche. His pokes and neutral control with the unreactable (at least online) mix ups makes this mu cancer even if the player is just being random. I believe around 70% of my losses are against sz, and they're prominent in kl. The rest I'd say is against jade which is mostly annoying but I can manage against. I don't mind losing to a good player at all is losing to shenanigans that I really hate. Any tips or counter picks?
And now for some constructive commentary:
This is definitely an uphill battle for any version of Johnny Cage, but you can win matches if you catch on to your opponents' habits. You're probably going to do the best with either Showstopper(unbreakable damage) or Outtake(Rising Star shenanigans).
As Johnny, you need to avoid throwing fireballs from anywhere past half-screen because a competent Sub-Zero will slide on reaction; instead, try throwing them(very occasionally) at around half-screen or closer, just to give the Sub player something else to worry about besides your advancing high. It's actually a good idea to throw out S2's from distance to bait slides for you to block and punish. If the Sub slides from a distance and you block it, use your F2 or F3 to punish because S1 and S2 will not reach him.
The good thing about Sub for you is that he too has an advancing high that can be D4'd, so be sure to bait him into throwing that out so that you can be +18.
As for his mix, the overhead is not reactable online, but it doesn't mean that you can't read when he will do it. If the Sub is at sweep distance from you or further, they will likely either use that advancing high(B1) or the unsafe overhead, so play at that range against him and bait the overheads whenever you can. Be sure to max-damage your punish. The low has much less range, so when the Sub is closer to you, expect it instead of the overhead.
Sub-Zero does have a 6-frame D1, but your pokes are much better overall and both your D4 & D3 actually low-profile that D1, so if your opponent's Sub likes to D1 after a blocked big boot, you can poke him right out of it and be +18.
People in this thread acting like Sub-Zero is Darth Vader and JC is a random-ass stormtrooper waiting to be destroyed because Sub's just all-powerful with his 'broken 50/50 vortexes' and whatever else they say that he has. Sub-Zero has some of the same limitations that Johnny himself has - no mids, slower advancing highs and situational normals/strings that all have exploitable weaknesses. As long as you play intelligently, bait slides/overheads, max out your damage whenever you get the opportunity to and download your opponent's tendencies quickly, you can beat the average Joe Schmo KL Sub-Zero player. Most of them do not use the character to his fullest potential, so you can beat them once you figure them out. I hope that helps.