I was referring to Healthy Nagato..not the crippled one.
Nagato can use the Gedo Mazo, his techniques are stronger when he uses them instead of Pain, his normal Shinra Tensei was far stronger than any normal Shinra Tensei Deva ever showed.
You must be registered for see links
Pain can summon it too:
You must be registered for see images
You must be registered for see images
Nagato can make a stronger push I guess, Pain's push is still good enough to keep his distance and counters
His Preta Path also has shown to absorb chakra faster than Pains.
You must be registered for see links
He instantly ripped all of Bee's V2 Bijuu cloak away, while Preta took this long to absorb a Chou Oodama Rasengan
You must be registered for see links
Absorbing skin cloak is easier to absorb then a Giant ball. But I still agree that Nagato does it faster. But Preta can still absorb and counter all Madara's attack (except for that shock-wave you explained)
But the main reason why Nagato has an edge over Pain is because Nagato is 1 body while Pain is 6, if one Pain gets taken out thats it,
its abilities can't be used anymore, which weakens the other Pains especially if they lose a useful path like Deva or Preta.