By Win, do you mean get top 4? I find that commanders with good early game tend to do better in terms of easily hitting top 4.
For instance, Tirion, unless you really low roll (or get D/Ced like one time, I was so tilted) is almost guaranteed top 4. You just grab neutrals, hit the hero power every turn and you'll out-stat most early to mid game. Yogg's early game is so good that you can tier up to 3 without taking much if any damage on Turn 7 and can look for win conditions without the pressure of low life totals.