Hashirama(1st Hokage) vs Mū(2nd tsuchikage)

I know it's a commonly accepted fact that hashirama wins this and I too am ready to accept it but when I think about the fight in detail I feel like Mū has a large arsenal of jutsu that Hashirama wouldn't be able to counter(imo).

• atomic dismantling • invisibility • all 5 chakra natures • added weight rock technique • flight • fast reflexes (faster than any other reanimated kage and dodged naruto's attack from blindside) • high level sensory ability

So what is hashirama's plan of action here? Can Mū just appear from behind and increase Hashirama's weight? Will Hashirama detect Mū in sage mode? Can't Mū immediately get rid of thousand hands statue? How would their battle play out?