Well no surprise, as cav is an easier class.
What other reasons are there for being average melee while ripping shit with cav? Skill is the same as skill, right? And he even picked 2h, the easiest melee class if you know how to block and play the ranges.
Many cav players suck on foot. And I guess it can be the other way around, many infantry players suck on cav. But from my own experience, I was a lot more deadly(but volatile) as cav. The greatest and all-encompassing boon as cav is mobility, and a lot of mobility.
Dedicated cav players are of course often a lot better than someone trying an STF, but 2h melee is almost as easy as cav, in some aspects.