He really isn't all that strong
Everyone he has faced barring Condit have been favorable match ups to him but even then, Condit still has terrible TDD
Pyle has never been that great against wrestlers.
Che Mills is a British striker
Mike Guymon is well......Mike Guymon
He suplexed Nate in the third round but was still unable to keep Nate down and Guida already tossed Diaz through the air with a single leg. now obviously Nate has improved his strength along with his wrestling since then but it still isn't some incredible feat. not to mention Stun Gun already smothered him(before gassing of course) three months prior to his fight with Rory
Rory has some skills and certainly isn't weak but he doesn't have brutish strength.