Thing is stronger physically, but I think Ms. Marvel's powers make up the difference. It'd be a real close battle of you ask me, who do you think would win?
Ms Marvel is class +100 now,she is way faster than Ben and unlike what some people here think,she does use her speed often,she also has the flight advantage and range advantage,her blasts have destroyed huge space ships easily,they will hurt Ben,Carol wins,she is overall more powerful.
Bens max strength is 150Tons.
Mr.Fantastic mentions this as She-Hulk lifts Bens max150tons with one hand.
Ben is a pretty good fighter and has a lot of endurance,and more durability and strength...Carol on the other hand can fly and can dish out consecutive blast...
I Say Thing wins 6/10 times...He'll find a way to close to gap and give her a beating.