I like Petty, but honestly, I think he's overrated. I hesitate to use that word, because I get it, he's the real deal, but he gets mentioned so often in the same breath as Dylan and George Harrison (primarily because of the Traveling Wilburys) but he's not at that level, IMO.
Sme here; his album is good, but it's not at the level of Who's Next, The Stranger, and Bat (and honestly, none of his do, not even Full Moon Fever).