I disagree. Let's turn it around a bit and say:

Everybody who gets excited watching a fighter fight automatically thinks that fighter is a great fighter.

For example, I think that people like Floyd, or Sweet Pea, or Calzaghe are wonderful to watch. I admire their technical skills, their nerve and their disciple ...... So I think they are exciting fighters.

I also love watching Tyson, Benn, Hearns and others knock seven bells of shit out of people ...... So I think they are exciting.

Someone else might enjoy the latter and not the former, so they might not agree that Floyd or Whittaker are great fighters,

Someone else might think that Benn was a limited and messy brawler, therefore didn't find him exciting to watch and therefore would argue that He wasn't a great fighter.

Maybe it's all in the eye (and heart) of the beholder??