What I've portrayed isn't what reflects orcs as a whole. And I wouldn't say that Malakaus is the best representation of what orc culture is like; he doesn't even want to involve himself in the affairs of his stronghold, which would have than gave him legitimate reasons to represent orcs. Right now he represents himself, regardless of what you perceive his race to be. Malakaus isn't even the greatest at what he does, he just happened to be better than most of the others he's fought. Hence why he would want to learn Khajit Martial Arts; expand his knowledge of combat and how to harm others.

And besides, when has he actually "Get mad hit things" in a fight? Sure, he's gotten mad and hit his underlings for being bad at their jobs, but in a fight he's a bit more clear-headed than that. Reckless maybe, but a Shield Charge and 67% damage immunity in tight quarters is much more useful than you might think, specially if your enemies have been grouped together due to said tight quarters. Things are only as simple as we make them, New Yorker. Emotions cloud judgement and our range of options. Malakaus only allows himself to rage when there's only one option he wants.