Best way I can describe this game to casuals going "it feels good to me, you guys cant get me to not have fun with it" is to say this.
Ok, us hardcores get that you are having a blast with all the problems, but just don't notice them. Ok, no harm no foul, BUT the input delay is like Chess being played with the board missing random pieces. It's that big of a deal. Maybe not a major piece like a Knight or Bishop, but maybe it's missing 1-2 side pawns.
Now, people who don't play Chess hardcore might not notice it, but you won't be playing Chess. Nothing close to the real experience.
That's how important latency is in SF4. You might not notice it, but you aren't having the real SF4 experience.
Anyways, to know that a dev knowingly made a version of Chess with missing pieces THEN seeing people say "nah, it's not that bad" is fucking infuriating. If you want to play SF4, I'm not even talking high level play, I mean, just PLAYING what SF4 is, this game IS that bad. If you just want to mash buttons and have a very watered down experience, then, go ahead.