Well, for one because despite its high attack it dies to a single Order to Charge/Soul Exchange. Blue-Eyes White Dragon will always be better as a high attack beater because it can be protected with Champion's Vigilance.
Nice but meteor b based fusion decks still have an edge due to blue d. Summoner, = less dead hands
Son of the Madness, not only a run-on comment, but a massive run-on sentence.... o_O;;
Kanga vs REBD in the Dead Hand department, maybe. REBD vs the actual other lv 7 Koala, not even. RE wins by being much more versatile. And if the many fights between BE & RE hasn't proven that overwhelming power (only by 600~700) isn't everything, then we should end this "discussion" here.
It ain't about winning (here), but correctly informing. Which btw, DMK/D Paladin/FGD all require Fusion Summon ONLY, unlike our current triple threat BEUD/Black Meteor/OZ, making them all much more difficult to summon & one-shotters.