Ah, my bad. It's been a LONG time since I've watched Bakugan. It seemed that, when the camera cuts back to the real world, during the duel between Dan and Shun, everything was still moving, just VERY slowly. Completely forgot about Alice's moment in stopped time until you mentioned, Anime4. :/
Also, while the six Guardian Bakugan split Old Vestroia into six different dimensions based on the six attributes, they were also responsible for creating the Infinity Core. Each one of the six used their own positive energy, put it all together, and used it to hold back the Silent Core, and then the
Perfect Core was created. This would mean that the Six Guardians have power equal to, what, one twelfth that of the Perfect Core.
However, this could lead to some crazy scaling problems, possibly, The only way to avoid that is to assume that the Six Guardians were not at their best when testing the Season 1 group, in which a seperate Key would have to be made for all of the Six Guardians' pages, where this immense level of power is mentioned.