Not even Sasuke's hatred comes close to Madara's,just look at how condescending he is,he's not like Sasuek who goes whining and screaming,he just looks down upon you with the "I'm tto fu**ng strong and you're not* look.He might have more hatred, but drive?
Then if you're a senju and your name isn't Hashirama well prepare your anus for he will sure reap you a new one.
Madara is the embodiment of hatred,power and bitterness,Sasuke has a long way to go to arrive to that level.
This maiden has just won the thread overMadara with ease, to him, Nagato is a kid with some neat tricks.
Basically Madara is an historical figure while Nagato is the raging nerd trolling the internets,just to give a RL example