In order for Nagato to turn into a frog is if Naruto's in Sage mode. Nagato absorbed Naruto's chakra once and didnt turn into a frog, in fact thats what gave him power to almost destroy both bee and naruto if not for Itachi.
*Nagato had the chance to kill Naruto 2wice before, now since he's teamed up with itachi it's over.
1) When Naruto found out where Nagato was hiding at Nagato evven said he could kill Naruto, BUT Naruto talked his way out of it.
2) Nagato
ABSORBED Naruto's Rasengan and then some of Naruto's Chakra, not to mention Bee's chakra & almost killing Bee with one shot.
Itachi now on the other had could have killed Sasuke since day one. Even when Sasuke killed Itachi, Tobi even said that Itachi could have killed Sasuke but didnt. Itachi is the brains between Nagato and him. Itachi is the reason Bee and Naruto lived through Nagato. Itachi is a genius able to figure out his opponent's jutsu's weakness. Itachi isn't just a ranged fighter with susanoo, amatersu, etc., he can fight hand to hand -- expert in shurikens and kunais. His TaiJustu's fairly well. Sasuke is learning from Itachi as they fight Kabuto, If what u say is correct Sasuke>Itachi, why is it that Itachi is telling Sasuke to keep near. Why is Sasuke not fighting? Itachi even at death surprises many with what he can still do that we have not seen. Example: Izanami, His Full Form of Susanoo, Brains, ETC.
Nagato has summons, Dogs that cant be killed unless Nagato is killed. Nagato can pull or push his target with at least 5 seconds interval. Nagato Has Shinra Tensai, Chibaku Tensai, Dogs, Lizard/Salamander, Bird. Nagato has gate of hell(metaphor dont quote me on this) in his hands to steal souls, Able to Absorb any Ninjutsu, Mechanical Arm. Nagato has Rinnegan.
All i want to know is how is Naruto going to be able to withstand Shinra Tensai? Chibaku could be destroyed with Kurama's Beast bomb alont but what about.
Sasuke hasnt shown anything since he's gotten the EMS. He's weaker that Itachi, let alone Nagato. Naruto would be the key factor in this fight to win it if they could.
You have some annoying A$$ facts just need to clarify things up
t(-.-t)
Im not saying Itachi and Nagato would win because they've made Naruto OP as shittt. I'm saying its a draw because they're all too strong

2-2=0.
Once Sasuke's EMS power is revelled then we can debate and it prob will be Naruto and Sasuke as the victors