Why is Faber the underdog?

I agree with MMaking. By logic, Aldo>Brown>Faber but that kind of stuff goes out the window in a fight. Just watch recently Rampage>Jardine>Grffin, Shogun>Liddell>Sobral they didn't work out in that logic did it? People who watch MMA pretty well know that Jardine beat Griffin, but Griffin beat Rampage. Shouldn't Sobral have been able to take out Liddell if he beat Shogun? Jardine beat Liddell via decision and yet lost to Wanderlei via murderous KO, so how did Wanderlei lose to Liddell? Rampage also beat Wanderlei via KO after getting virtually killed by him in their two first fights.

I am cheering on Faber but I am becoming a fan of Aldo, on the other hand.

Mainly because Aldo destroyed Mike Brown, and Brown knocked Faber out in the first fight, and beat him by decision the last fight.

I prefer faber.But lets be honest Aldo is the new blood and is gonna rip faber up.Have you even seen aldo fight??If so you wouldn't be asking this question.Also if you had any brain you would know the challenger to the title is always the underdog.