Genma has a special ability like Konan and Deidara.
HE CAN MAKE ART TOO!!!!
Do not underestimate the power of toothpicks! If he has AIDS and shoot Madara with it. There is no way for Madara can withstand that.
But anyways back to the topic.
Tobi vs Naruto Team?
I'll assume it will be Sai and Sakura.
Sai will get killed. Sakura will get bitch slapped. Yamato will make Madara run with that Scary face and Kakashi? Well Kakashi will do what he does best!
Waste chakra and pass out. Thus earning the time to read more of icha icha tactics. But do he care? No. He knows he's gonna be saved by PnJ so why does it matter for him to go all out.