No I dnt think Naruto wil be that stronge ,,,power has ntng to do with peace ,havng the same powers as Sage dosen't change anything all Naruto have to do is to unite the world,,,there are so many way's to stop Juubi & so many kinds of power's existed in Narutoverse we still dnt know wether the rinnegan is sage's ultimate power or not,for example we thought that MS is the strongest untill we find abt EMS & EMS is strongest untill we find Rinnegan,,like that may be there exist a new power & Having the same powers as rikudo doesen't mean that he the 2nd comming of Sage,if so Sasuke would be 2nd comng of Madara(ofcourse we r all thinkng the same)& Madara would be 2nd cmng of Sage since he is the 2nd one to awaken the Rinnegan....No one ever mentioned that Naruto is 2nd comming of Sage they just said that he wil be the saviour of the world.....