Your posts seem to center around the opinion of a very small minority. In this case one person... In the same way Tua is a H2H monster. Very few people actually think this although he would be a handfull certainly for some. An ATG is someone who could fight in any era and be elite in their weight division. This can include people who had a long reign at a single weight like Hagler or Monzon. It can also include people who moved up through weights and had success in each division like Pacman or Duran. Other characteristics are taking on all opponents put in front of them and can be strengthened if they fought in a strong era. Longevity is also a factor like Hopkins or Foreman. The level below that is HOF level. I've never heard anyone assert that Lyle and Young are ATG. never.