It's been like a while since I last did a WWW

Gigantoraptor is 2-3 tonnes compared to carno’s 1.85 tonnes

Gigantoraptor

Depends

Gigantoraptor has no weapons to kill Carnotaurus with. How could it possibly win?

^ That feeling when legs:

Claws

The legs aren't strong enough to deliver a killing blow, and the claws are too small.

True ig.

Though if we are talking realistically, one good kick and the Carno flea's the area with a head-ach.