If they met in the wilds, a pack of lions would all attack the tiger and overwhelm it. The tiger is generally bigger and is stronger, so it would win if they fought "mano a mano", but lions fight dirty.
I think it's tigers cuz tigers are bigger stronger and more ferce. I read the other andswer and I'll agree that lions don't fight and let the lioness do all the fighting. Lions have more disadvantages and tiger have the upper hand
most likely a tiger as they're bigger than lions and have sharper teeth/claws
tigers are also faster
and lions don't like going in water and tigers do......so an advantage for tigers i guess????
Preferably a tiger due to its advance hunting techniques, vicious combat style and overall stealth whereas a lion sleeps 16 to 20 hrs a day and relies mostly on lionesses for hunting and other combat situations.