Obito has shown better chakra feats than Nagato(Ofcourse due to Hashirama's DNA)..Don't forgot that Nagato Absorbed chakra from the people of Konoha & Naruto we shouldn't consider that as his own chakra.....
Nagato would have revived Yahiko if he survives RT
Obito would have killed Nagato to get Rinnegan.......
Obito has shown better chakra feats than Nagato(Ofcourse due to Hashirama's DNA)..Don't forgot that Nagato Absorbed chakra from the people of Konoha & Naruto we shouldn't consider that as his own chakra.....
Nagato would have revived Yahiko if he survives RT