I agree with you 90%. Yes, there is a difference, but let's not forget the "laughing AT" part applies to 99% of the fighters.
GSP - baby, I can go 25 minutes without finishing
Anderson Silva - Viagra
Hendricks - burgers, pizza
Khabib - Tiramisu
Jones - limp dick, dick pills, chicken legs, cokehead
Conor - gay
Aldo - 13 seconds
Mendes - midget
Rashad - brain damage
Cyborg - man, transexual
Ronda - so many you can't choose
Woodley - drama queen
Romero - gay Jesus
Bisping - ducker, pussy
Browne, Weidman - they were destroyed after their losses
Rockhold - gay, sore loser
Schaub - oh, the poor guy
I don't know about Rich Franklin, but I guess there were at least a few guys that mocked him.
So DC is not special. Rashad's gif was more offensive, in my opinion. Crying vs brain damage, I choose brain damage. But DC is a nice guy and that's why he failed, because he tried to be the bad guy, and he is no Sonnen... I don't know what is the right word, but he could had another approach when confronting Jones verbally. Something like "I don't know, I don't care if he is on steroids, I will fight him, may the best man win, I will not say anything about his dick, his legs, his PEDs". Simply, no fucks given. Still, those verbal attacks sold the fight.
By the way, I thought GSP vacated the title because he had terrible headackes.