Well you have the draw the line of demercation somewhere. I mean with that said who do you think would win in a fight between the 3rd and the 4th? You mean the 3rd has a counter for jinton? you mean the 4th has a counter to a tailed beast chakra and his 3 finger attack? You can argue this back and forwards with conjecture. But we know that Hiruzen has the RDS and his feats are pretty outstanding even being able to go toe to toe with Orochimaru and 2 edo tensie hokage, and even with that Yenma said that he was a disgrace when compared to him in his prime.