He KO'd Fitch in the first round. It took GSP 5 rounds to beat Fitch and he never had Fitch in danger of being finished.
Hendricks has more stoppage wins in the last year than GSP has in the last 4 years.
Cool story, bro. GSP hasn't lost in five years. Johnny Hendricks has.
I suggest you go back and re-watch Fitch vs. GSP. Hendricks KOed Fitch in 12 seconds. GSP laid down a 5 round beating in which he had Jon in trouble on multiple occasions. They're both impressive victories in their own right. Trying to dismiss one in favour of the other is just nonsense.