You mean LnP? I think that's just like real MMA. In order to compensate I have become very good at flicking the right stick back on shots. That way I can end up in a front side headlock and easily transition to their back.
I have yet to come across any exploits that are impossible to counter.
well i forget who it is but there is a transition (it might be a submission atempt that if failed they stand back up but) where they switch from being mounted to standing back up and there is no reverse for it or something like that. also some fighters submissions are just impossible to get out of especially with the terrible servers