I just recently brewed the BB witbier kit, and have had them in the bottles for about 3 weeks now. First thing I noticed right away is that this kit has a "steep to convert" step, which is basically making this kit a partial mash kit. For me, this was a nice change as all I have brewed upto then was BB specialty grain extract kits.
I just tried a test bottle the other night after a few days in the frig, and like you I thought it would taste like bluemoon. Even though it tasted good to me, it wasn't a bluemoon. I thought I screwed something up, I did some research and found out hoegaarden would be a good beer to reference for this style.
I picked up a 6 pack of Hoegaarden tonight and after tasting that, I got extremely proud of my BB Witbier batch as it tasted pretty damn close to the Hoegaarden. So proud, I threw in a round of my batch in the frig for this weekend and can't wait.