People forgetting Porter fought Spence basically even. Spence isn't some dynamite unbeatable legend. It is Pac who has had a claim to that.
Yeah it's not even a question, the amount of huge fights he's had and the challenges he took will almost certainly never be seen again in this age of narcissism. That run of wins from 2006 until the absolute robbery that was the first Bradley fight is the stuff of an ATG.