No, that doesn't usually help. However, while the standard flier is necessary to get to certain dungeons, the epic is more for bragging rights as far as I know. Now I do know that there are flying enemies in the upcoming expansion and the epic may become necessary just like the epic ground is for outlands. Because the epic ground is faster it's harder for enemies to catch you and hit you hard enough to knock you off. Might be the same for the flying enemies that we're going to have to face. However, right now the standard flier is enough for me.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf