I don't agree with it, personally.

I think that logic has been used to discriminate against a few guys over the years (Roy Jones in particular) whose only crime was being too good and too untouchable; of achieving a level of excellence that was so "head and shoulders" above all their peers that they never had a true rival.

SRR has been considered TBE for many decades. Who was his rival? Jake Lamotta? What was so great about Jake Lamotta? Why was he any better than Canelo or Maidana?