First who on earth said that the 1st was capable of beating Madara to a bloody pulp? No one. They were said to be equals by Tobi and that Madara threw the final fight. History said that the 1st won, but no one puts up monuments for things that happened effortlessly. Think about it, the statues at the valley of the end represent a true battle not some butt kicking.After watching manga chapter 560, i am forced to conclude that KISHI IS IN LOVE WITH THE UCHIHAS and is going to any lengths to show them most extremely powerful ninjas!!!!
why not show the epicness of SENJU AS WELL??????
IF HASHIRAMA WAS CAPABLE OF BEATING MADARA TO A BLOODY PULP?????
WHY THE DISCRIMINATION????
And if real madara did develop rinnegan before, did he just multiply it with 5 to create somany rinnegans, or how did tobi do that if he didn;t have even a single eye of madara??? seeing as the real madara has both his eyes in place?????
and now if sasuke incorporates senju dna into himself, will he too develop Rinnegan????
if that happens, KISHI I WILL EAT YOU ALIVE
2nd maybe you haven't realized it but Edo Tensei brings someone back to the point they died. For example Itachi and Nagato had their eyes removed but their Edo Tensei selves had both eyes. So real Madara also had both eyes when he died friend.
The Uchiha's are descendants of the older boy who had great eye powers, so Sasuke has great eye powers being the heir to that power. This is like every story the enemy often seems to have unbelievable powers while the hero is often short changed, but the hero always manages to pull it out in the end.
Don't worry about how strong Sasuke gets, it only represents how much stronger Naruto will become.