Dirrell clearly deserved the fight imo.

Although Dirrell clinched often what Froch was doing in the clinches was far worse with his rabbit punching and using his elbows, he also starting practicing his judo half way through the fight

Besides the rough tatics, clinching, etc Dirrell did land the cleaner shots throughout the fight and was the busier fighter in the early parts of the fight and he clearly won the late rounds. Froch landed about two clean punches the whole night, a very bad performance by Carl.