I think Ricco Rodriguez in his prime pre Drug Problems could have been competitive even in the current landscape I could see him having been in the 5-10 range. I don't think Arlovski ever had that great chin either the guy just was that much better a striker during his hey day so it wasn't as big of a problem, he is competitive till he is not against most even still. Lesnar I think would still be top 3 if he had not had the surgeries whether it was the time off or merely just a result of the illness and surgery themselves its impossible to ignore how fast he fell apart.
"If you get hit and it hurts hit him back you not knocked out yet."-Joe Doerksen
The Toxic Terrors (FFL)
Demetrious Johnson*Eduardo Dantas*Rafael Silva*Zach Makovsky*Michael Page