pov: dkt is weaker than muzan because: 1- muzan was more aware of what he did and thought while dkt is not aware of what he does, 2- muzan controls dkt, 3- muzan could do better things than dkt for example thanks to tamayo they won the fight but if it wasn't for tamayo the demon hunters wouldn't have done anything to muzan
Muzan would probably win because he has more battle experience as a demon and Muzan can take his blood and even if tanjiro turn back to a human he can't beat muzan alone
No muzan gave tanjiro all his blood before he could die from the sunlight, making tanjiro the new demon king so technically, muzan would be tanjiros upper moon 1 if he stayed a demon and revive muzan.
No this Tanjiro prefers large animals, but he doesn't stop the others from consuming humans, tho they are not allowed to eat people who range from 1-30