uh ridiculous base damage and on his q that scales with ad. So he can build straight tank and still do lots of dmg. he has 3 cc's, a knockup on q, a slow on e, and an aoe knockback on r. This makes him a malphite like initiator with his e + r and a tank build (as r does 15% current hp as physical dmg, and gives bonus Mres/Armor per enemy champion hit, up to 125 if all five are hit). Also, a really good AS steroid on his w mixed with good sustain (50 hp every 3 hits at rank five compared to irelia 13 X 3 = 39). Hie w + q pushes towers as fast as master yi, and BotRK is the only dmg/sustain item he'll ever need.
Keep in mind this is VERY biased as he and olaf are my main junglers and solo tops. (might learn Cho tho)
Forgot about that passive 15% arpen. build a LW and you just halved their armor :P