User blog comment:FusionFall123/A talk about "Ben 10: Alien Dimensions "/@comment-3290441-20110320122153

I agree with the time travel theory, The waybig seen in the ad is the same version of the one seen in Alien Force and Ultimate Alien and both the fourarms and the waybig had the Omnitrix/Ultimatrix on at the same time which supports the theory further.