Rory was very well rounded, but I think this strength was kind of a weakness, too. He was pretty good in wrestling, BJJ and submissions and a pretty big WW. But he didn't have any "superpowers," like GSP's dominant wrestling, 1-punch KO power like Hendricks, a deadly submission game, etc. He was able to keep it standing enough with Maia (though he spent some time on the ground) to win. He was able to wrestle Lima enough in their first fight to win. He used his skillset and a good gameplan to beat Woodley. But he got lulled into a brawl and ultimately lost to Lawler (twice) and got outstruck by Wonderboy. If he had GSP's wrestling, he could've won those fights.
He's kind of the poster child of what's good and bad about being a modern MMA fighter who had no real specialty before MMA (like D1 wrestling, karate/boxing/kickboxing, BJJ tournament champ, etc). Edwards vs. prime Rory would be interesting. I'm not sure how he'd do against a point fighting striker with pretty good TDD. Most likely it would be a close decision and people would call it a boring fight.