Agreed that Naruto vs Toneri was not a battle on the level of the Juubito fight; Toneri's powers were lackluster, and Naruto won pretty easily, all things considered.But RSM naruto =/= the last naruto, just cuz he did that with rikudou senjutsu does'nt mean he can replicate the same feat with just sage mode.
Him forming a one handed RS or curving it does'nt mean much against fighting an opponent. And we all know that punch aint taking down juubito nor would it bypass madara's susano, which is my point all along, his feats are not above what these guys can handle
However, I'd say that the punch probably would break Madara's Susano'o, or at least heavily damage it.