why do some say benny leonard is the ATG lightweight?

[BennyST]

Wasn't it B. Leonard that Arcel was fond of?

Arcel said that he considered Leonard as good as Robinson, and a better ring tactician/thinker.

[prometheuslord]

in a h2h battle between leonard and duran at lightweight, who wins? all i know about leonard is really his resume, but i don't think he ever faced anyone close to as powerful as duran