In no way am I saying Miller is a bad bet as he's an underdog and tough as nails veteran. I'm kind of passing myself on the fight. I just don't know how you can be surprised if a former champ beats a gatekeeper albeit a very good one. Jim would be his worst loss after losing the belt. Max, Alvarez, Barboza, and RDA.
Pettis' kicks are really good still and he's hurt people with them. Such as cerrone and Bendon Henderson(Also a southpaw). His boxing is pretty crap compared to his kick game but that should stifle miller enough to keep distance.
Jim's leg kicks will not be as effective as they were in the Dustin fight as Dustin and Jim are southpaws so the outside legkick is there.
Pettis' grappling is pretty underrated. Aside from the RDA(And guida) fight he made bendo, Eddie Alvarez and Melendez struggle to get takedowns. He also subbed Bendo, Melendez, and Chuck Oliveira. All 3 have black belt level grappling.
Jim Miller has never been this unstoppable grappler especially after the first round. He gasses bad and was outstruck and choked in the later rounds by Pat healy as well. Supposedly it's been cleared up after treating his lime disease but he still gassed terribly bad in the Joe Lauzon fight and looked very tired vs Dustin.