Now that I have poured both I'll explains the differences.
Appearance - The "clone" is about two shades darker, but both are pretty clear. They both produce a nice white head, although the "clone" has better retention.
Aroma - The gumballhead has a more citrusy nose, while the clone has more fruit present, although the citrus is there. I'm guessing this is coming from the simcoe used in the dry hopping.
Mouthfeel/Body - Both are about the same when it comes to body, although the clone is a bit creamier.
Taste - Both have a nice citrus and wheat flavor, but the clone is a little sweeter. Gumballhead also has a more apparent floral hop flavor. The sweetness in the clone probably covers this up a bit.
These are both very good beers. I wish gumballhead was distributed near me, but unfortunately that's not the case. I think I may prefer the "clone" a little bit more, it seems to match my personal tastes better.