So....obviously one of the biggest winners coming out of UFC 173 has got to be Raphael Assuncao. Absolutely no one had any interest in Barao/Assuncao to the point where it seemed that the UFC was almost actively avoiding it by giving Raphael fights against Vaughan Lee and Pedro Munhoz (albeit on short notice).
With Dillashaw winning the title, suddenly Assuncao's title shot is actually more than just a pointless formality, what with his having won a close decision over TJ and being the last man to beat him.
But what about Dodson? Unlike Assuncao, Dodson beat Dillashaw decisively, being the only man to stop him. From Dillashaw's point of view, he was a very different, much more one-dimensional fighter back then and I'd imagine it'd be a loss he'd want to avenge, perhaps even moreso than the Assuncao loss. With the Assuncao loss, I believe Dillashaw just thinks he got screwed by the judges. With the Dodson loss, TJ could prove how much he's grown as a fighter.
From Dodson's point of view, yeah, he was a small BW, but I think it's pretty clear that his move down to FLW was also largely motivated by its giving him the fastest route to a UFC title shot. When he faced Mighty Mouse for the title, Cruz was still BW champ with Barao holding the interim title, leaving everything in flux, plus Michael McDonald, Eddie Wineland, and Urijah Faber were all in line. Meanwhile, at FLW, there was literally nobody.
Now, Dodson's already lost to Mighty Mouse so he's got a bit of a road back while new guys like Horiguchi and Makovsky pick up steam.
Meanwhile, at BW, Dodson would go in as the man who knocked out the champion. Suddenly that TUF Finale win means quite a bit. I could honestly see Dodson moving back up to BW, beating someone like Mizugaki or even Alcantara (assuming he wins his next fight, which he will), and then getting a shot at TJ just based off their prior fight.