This is such a typical snowball thread, when a couple of people give there opinion then the rest of the sheep go like: Agreed, This ^^, solo low diff. Quick way to add +1 to the post count without contributing to the discussion.
I'm a big Sanji fan but I don't think it would be easy at all. (Let's just for the sake of the fight assume that he will fight Bonney seriously)
Sure we can compare strength quite well if we compare TS sanji vs Pacifista and all the other supernova vs Pacifista.
But even so, it's a tricky bunch with some interesting devil fruits. Law, Hawkins, Bonney and Apoo can use some tricks that throw him off his game.
So he will have some problems to deal with, how to counter Law's room. Is his haki that good already ?
How to predict and avoid Apoo's ability which you can't see but only hear. How will he deal with Bonney's age reducing/inducing ability and then there is Hawkins Voodoo which probably can do more than what he has shown vs Kizaru.
I don't expect him to have problems against the physical fighters such as: Luffy, Zoro, Drake, Urouge and Killer.
Law and Capone have devil fruits as well, but I think they would be useless in this fight.
So I do agree that he can beat every supernova one on one, but there is no way he can take them all in a group fight because he would get messed up by the strange abilities.