Pushback is too much anyway, everyone can neutral crouch cyraxs strings at the beginning, Kenshi doesnt really have to respect the guess game after 334 on block because Cyrax players are near enough forced to D1 to keep any advantage, and +1 gets you nowhere vs Kenshi. Add in the fact that Cyrax cant really whiff punish low pokes very well, and you've got a problem staying in on Kenshi.
He'd have to start doing stuff like shooting out nets close range. Basically 334 isn't gonna stop Kenshi from being Kenshi.