I just got Tekken 7: Fated Retribution on Friday for my PS4, I've been playing the hell out of it on my Hori fight stick.
I, of course, started out with Akuma (as you might've guessed) on Arcade Mode, and man, for a guy predicated on being so OP, he really is lacking in combos or at least they're super hard to pull off. I remember having to use MANY continues to beat Kazumi (the end boss). Then I started playing Treasure Battle with Nina Williams (the poster woman of the Tekken series), and damn, she's OP as hell in this game, I instantly mastered her combos without even practicing. Her combos and move set are off the fucking charts. I went from getting my ass kicked with Akuma to instantly taking names with Nina.