Got to say these all time lists are highly biased towards old fighters.

I mean Joe Luis at 4, really?

Apart from Schmelling who did he ever beat? His era was as weak as our modern era. Larry Holmes, Lennox Lewis, Tyson, Holyfield, Bowe, Ali, Foreman and Frazier would all be favourites to beat him imo.

Marciano too has a record less impressive than Joe Calzaghe. Again who did he beat?

Henry Armstrong did a great feat but Manny has done as much already imo and could go on to do more.

In all seriousness I really think Manny is top 10 already with guys like B Hop and Roy Jones thereabouts too.