Again, sometimes people just rank how great fighters are based on whether they had titles. Arona was easily a top 5 win for Shogun - Arona was a better fighter than Forrest Griffin, PRIDE Overeem (how is that even debatable?) and 40 year old Chuck Liddell.
Arona was just a boring fighter and technically never held a title, but he was elite and at the very least as good as Tito Ortiz for comparisons sake - probably better to be honest.
Arona beat Wanderlei Silva who was the champion, and basically beat him in their rematch also. Ricardo Arona is easily a top 5 win - and Lil Nogueria would have clowned Forrest Griffin. In fact Lil Nogueria wasnt even bad in the UFC...much less in PRIDE. Dunno what that guy is talking about saying Lil Nogueria never beat anyone - and his fight against Rua was a great one. Rua had to take down Nogueria to beat him.