I disagree because from what Hiruzen's shown he'd be destroyed by Nagato or Naruto. I can't simply say he can block a tbb or ct because he was nicknamed the god of shinobi and mastered a bunch of konoha jutsu. There's no logic behind that whatsoever. I can only go by what's been shown.The thing is we dont know whether he could win a fight against nagato or current naruto thats for sure. What we do know is that he would challenge them, that is certain. Also we dont know whether he has techniques to block tbb or ct. What we do know is that he was called professor for supposedly mastering quiet alot of konoha's ninjutsu's.
Anyway I don't want to turn this into a versus thread so I'll just rest my case. You're free to believe what you want though.