[4e] Super Glaive combo?

[RTGoodman]

A common enemy won't even benefit that much from combat advantage however, because Uncanny Dodge negates the +2 to attack roles that combat advantage gives.

The problem I see with it (and with the Polearm Gamble feat in general) is that Combat Advantage does a lot more than just giving a bonus to attacks - a lot of enemies have extra damage or other things they can do if they have Combat Advantage, and I don't think Uncanny Dodge does anything to stop that. Sure they don't get the bonus to hit, but even minions are likely to hit you occasionally and still gain other bonuses from having CA.