i posted this in another thread, but i'll post it again here since it's relevent here.
"just did some testing of the standard vc blast on each character in the game. there are a few unclear and mixed results.
i first tested which characters the vc blast will hit when linked with 334 or b312 while the characters are standing and blocking. if the vc does hit after 33vc, 334vc, b31vc or b312vc then raiden is at a massive advantage and if it doesn't the is is at a disadvantage. i first tested this with all the characters midscreen while up close (almost touching) and these were the results.
characters that get hit: liu kang, kung lao, sub zero, sindel, kitana, johnny cage, jade, mileena, nightwolf, noob, sonya, jax, kano, baraka, kabal
characters that don't get hit: scorpion, ermac, reptile, cyrax, smoke, sektor, quan chi, skarlet
it is important to point out that kitana and kano gets hit by vc blast midscreen when linked with only with the b312 string. shang tsung only can only get hit with his back in the corner by b313 but can get hit midescreen by anything else. kabal and kenshi cannot be hit in the corner at all with any strings linked or cancelled with vc. raidens hand and vc blast just seem to go right through them if you don't use the right move. i don't know if this is unintentional or not. all the rest that get hit midscreen, get hit in the corner by anything.
what i also found out is that with some of the charcters that don't get hit midscreen, you can whiff the first few hits of 334 or b312 by standing a few feet from your opponent and vc will hit. i even tested the 22b4 and 1212 strings with the vc and again got very mixed results, but there's not really any need for these strings with vc as you have the others which consist of overheads and are traps."