Draco(Dragonheart) vs Indominus Rex

Draco from Dragonheart takes on I-Rex from Jurassic World.

Round 1: Slugfest.
Draco is not allowed to breath fire and I-Rex is not allowed to use camo.

Round 2: All out.

Draco is not allowed to fly.

The fight takes place in an african savannah.

Who wins and why?

Draco should dominate. Should be more massive. Remember, the I-Rex was bi-pedal. Does anyone have the stats for I rex? Or Draco for that matter. Being able to fly in round 1 is huge advantage as well. In round 2 he can breath fire? Well. He wins that round as well.

50 feet tall

Actually, the I-Rex was 50 feet in length from head to tail, so its standing height would have been less. That being said, it doesn't look like Draco should have a size advantage, judging from this pic. They seem relatively similar in size.

Dragon was a fire breather right?