wolverine will definitely win 3 aliens, more like 20 will take wolverine down, did you remember the broods, when they came and infected all the xmen, colossus, jean, Cyclops etc turned to the broods, but wolverine could not transform completely due to his very stable molecular adamantium skeleton. yet, only wolverine took down like more than 50 of the brood army, until they were all transported back by binary. anyway, the broods are very much as powerful as aliens. due to wolverine's razor-sharp claws, it can slice the aliens clean and neat, without the blood splashing allover the place. and if it does splash on wolverine, the burning will eventually stop and his healing will take control. besides, acids, burns are pretty much close in relation to what it does to the skin and muscular structure in the body. And as for the acid burning adamantium, that is ridiculous, there is no way that slimy sticky/ enzyme looking- blood is gonna melt adamantium, adamantium cannot be melted; even in its original state at which it was formed from its liquid temperature it will still remain solid, it cannot be broken, penetrated and destroyed. adamantium ignores every other material as long as it is not adamantium itself, the metal is very, very dense, stronger than diamond by far, and stable molecular structure, it will withstand magics, heat, acids, pressure, force, bombs, etc, name it, it is simply indestructible. Anyway, more like 10 to 20 aliens will take wolverine down, but mot 3 alien, thats too small. he is way better than that.