I mean, just look at Mr. Jarate C SRK, DC into Tatsu, and EX Super is only 435. For 2 bars and a drive you only get that much damage which is on par with most of the cast. Stack that up against Hwa. Shit, if Hwa has you in the corner and does B SRK, DC into D Dragon Tail, another D Dragon Tail, and end with Super that's 408 damage. That's without getting into the fancy shit either. Not to mention Drunk Mode.
I think most of the complaints stem from the fact that it's high damage just from a dp. Sorta like dp FADC ultra or whatever from SFIV.
The reason that was messed was more due to the DEFENSIVE applications of FADC. In SF4, you could throw out DP FADC all day as long as you had the meter, and never had to worry about anything as long as you didn't whiff it. It was safe on block, and led to Ultra on hit (or in Vanilla, add that a Trade means Ultra without burning any meter...).
Karate's DP actually has to land, if it's blocked, he's dead.
And hey, what do you know, Hwa even Drunk has the same problem if he gets too reckless with his DP (unless you're DandyJ and just say fuck it, I'll neutral activate HD and go wild, which is a big risk in itself).
And Hwa isn't close to broken, unless we're calling broken every time someone has great offense, which does seem to be where everyone seems to go to in every single game these days (can't wait for the eventual Aegis and Chie are busted in P4U).