Speed of crush triggers is one thing they did make constant across all of the characters. I remember posting that all crush triggers were 30 frames in the rag forums before the mook came out, I think I got laughed at cause it's 'faster than 6b' or something. Certainly seems like crush triggers only play a role in certain characters' game, and I agree that it doesn't seem like the best system. Ragna's CT is at least +2. Makoto's CT is +/- 0, and there are even characters where the CT is negative. TBH just the static difference is something, without getting into stuff like certain characters having CT's that can be set up so they can't be mashed out, and duck back so they can't be DP'd, etc etc.
But all system mechanics are going to provide different bonuses to different characters. And it's usually going to end up seeming unfair because the top characters are probably going to benefit more from those system mechanics.
OD is totally character specific too. But then you also have universal systems like gold bursts, which strongly favor certain chars anyway (read: characters that can use reversal gold bursts to go into a 5k+ combo vs characters that can barely pull out 2k (Tsubaki))
so, it's all the same to me, and at least it isn't the shitty primer/burst system of EX.