You know what farkin sucks about MMA?
How you can never have a definitive number one guy in the world because of how styles makes matchups (don't counting Fedor at the moment).
Think about it.
The number 3 guy in the world can lose to a number 10 guy if it's a good matchup for number 10, where number 3 would normally destroy guys ranked 4 all the way down.
A number 1 guy can lose to a number 4 guy if it's a good matchup for number 4. But the nunber 4 guy would usually lose to 2 and 3.
Check out this MMA math and see how messed up it is (forget about how they happened in the past for now):
Wanderlei beat Rampage (twice).
Wanderlei lost to Tito.
Therefore Tito is greater than Rampage.
But Tito can't be greater than Rampage, since Rampage destroyed Chuck twice and Chuck destroyed Tito twice.
Forget about my MMA math for a moment and I hope you see what I'm saying.
It sucks that you can never really pinpoint who is definitively the best. A top 20 guy can beat a number 3 guy if it's a good matchup for nunmber 20.
Sucks ass eh?
I can only see it getting better in the future (like 20 years from now) when every fighter is a lot more well rounded than they are today.