Fabiano has the style to beat Faber, but if he loses, then Faber still has guys like Pequeno and Aldo. So far, he has 5 guys who are solid 145'ers: Brown, Wagnney, Tamura, Aldo and Pequeno.
I just don't care for Urijah Faber. I like Wagnney and would love to see him get his props. Faber's good fighter, but is overrated. Someone like Wagnney, a guy who can strike (Heavy hands) and has excellent BJJ, will be a tough match-up for Faber. Also, Wagnney won't be a walking corpse like Jens was.
Keep in mind that Fabiano has smoked some 155'ers with ease. Dude is legit.