Honestly it depends where you scale naruto because I honestly don’t think doffy can easily put down 6 tails naruto and especially not 8 tails. Doffy might be SLIGHTLY stronger then this pre war arc naruto but not enough where he would stomp him like a ant in a 1v1
People are also forgetting about 100 healings tsunade. She is INSANE. Enough ap to punch through madara susanoo and doffy really won’t be able to kill her while In this state.
And then he would have to deal with Kamui, Sealing justu and, genjustu.
And genjustu does work on people without chakra and it really was never stated otherwise. It’s stated that “genjustu is something that works on your opponents 5 senses to control the chakra flow” not that it controls the chakra to manipulate the senses. Plus it works on animals and sage creatures without chakra. I’ll link more information on why Genjustu would work.
Honestly I think he really dosent get far and gets out haxed pretty badly and gets over powered by tsunade since she won’t have to heal the whole village from a shinra tensei. Just my opinion though. I’m open to more interpretations. Doffy is definitely a decent threat at this point in the series though