You are only bringing up the end of somebody's career to prove a point?
You think GSP and Jones are GOAT right?
Look at their best wins:
Matt Hughes finished his career 4-5
Condit is currently 2-6, lost to Magny
Hendricks is 3-6 since GSP
Kos has lost his last 6 fights
Serra was 1-3 after he KTFO GSP
Penn finished 1-7-1
Diaz finished 0-2-1, retired at 30?
Alves is 5-6 and cut to LW
Rashad finished 2-6
Machida is 2-4 and barely beat Anders
Shogun is 6-6
Gus is 2-2 or 3-3
So did all those guys always suck or did they simply get old, broken down, declijed and had some tough fights? Funny that you could accept Rashad and Kos are past their primes after 20 fights yet you can't believe Fedor, Nog and CC were past their primes after they had way more fights and more mileage and years.
Also when you throw in the fact that GSP retired at 32 years old with 2 losses and Jones is not even 32 yet, yet you judge Fedor who did not lose a fight until he was 33?