I tried not to go back too far. Largent was pushing it but he was unbelievable. Once you get to the early 80s, 70s and 60s it gets complicated.
Personally I would take guys like Stallworth, Morgan, Carmichael, Mel Gray, Biletnikoff, Branch, Joiner, Warfield, alworth, Harold Jackson etc over a TO but the difference in eras makes the comparison impossible, plus if we are talking about the best WRs playing in an era where WRs are more important is a big plus to their argument.
One of the reasons Brady is the GOAT is that QB play today has more to do with winning than it used to.