Revenge meter, you basically get rewarded with a comeback mechanic for playing shitty and getting hit more than you have to.
Mash happy dps and reversal attacks, you can pretty much mash dp in between block strings etc etc.
A few things:
1) SF4+ has two meters - the super meter and the ultra meter. The ultra meter does indeed fill up by getting hit and gives access to a potentially game changing move. The super meter fills up by being aggressive. Thus, while someone being beat will get access to their ultra early, their attacker will be filling their super bar quickly allowing for more ex special moves for more damage or continued pressure.
2) If the person "playing shitty" lands their ultra (remember it is not a guaranteed 100% safe move and good players can bait them out), chances are they've just given the better opponent access to their own ultra move. So now you have a good opponent with probably lots of super meter from being good (unless they already blew it for big combos) and access to their ultra.
3) If you get out a DP between blocked moves then either the blockstring had natural holes in it (then it isn't a block-string and should never be used by anyone with an invincible reversal) or the block-string was executed poorly (in which case the attacker isn't as good as you're making out). And if you start mashing DP during every blockstring, these can be easily baited and punished hard.
SF4 can be played very tactical but still very scrub friendly in most peoples opinions tbh
Most people are complete scrubs when it comes to fighting games and think their bad habits are high-level play.
Also, I'm seeing the "you can only have a balanced game by having 1 character" arguement crop up again. Bullshit. Look at what is considered to be the 5-5 match-ups in whatever game you play and tell me if both characters are identical in those MUs. Unless it's a mirror match, the answer is more than likely no.
Please stop preaching it. Just because some devs have said it's true doesn't mean it is, and the whole bad match-ups make the game diverse argument is a bullshit cop-out on balance, especially when you run events with money on the line. "rly guise itz ment 2b liek dis. akoooma winz teh big buks".