I have to disagree. After watching Hendricks beat GSP(yes I know the judges handed it to GSP), I don’t think his style matched up well with Askren. Hendricks would have been the guy more likely to beat him in his prime. Block the grappling early on and land heavy strikes. One thing Hendricks has was super heavy hands. But, I don’t care who you are, if you let it get past the first couple of minutes and he weathered your freshest punches, you are done from there. GSP was very well rounded, but liked to grapple and without the real heavy hands, he was going to spend quite some time underneath Askren.
GSP has one of the best jabs in MMA, he would keep distance from Askren and pick him apart. Hendricks had the threat of hurting GSP at range, Askren does not. Askren would get his head taken off trying to get to GSP, whether it would be slow from jabs or brutal from kicks. GSP is a much better wrestler then Lawler, and not a pure brawler. He has a much more varied offense to keep Askren on his heels.
Askren is a nightmare match up for lots of fighters, but GSP is going to beat the snot out of anyone that doesn't have the threat of 1 shot KO power. Askren also tires his opponents out, not happening with GSP. I also think on the off chance Askren did take GSP down, GSP has good enough defense to take almost no damage, although it would be difficult to get out from under him