How do you beat the final battle in the Bakugan Video Game

You max out your Leonidas twice in speed and the rest in G power, then when you get to the final battle, gather 90%-100% G power pickups on both dragon things and get the orange wheel card thing, get an ability card that chooses your best battle (Shaking, Shooting, or timing) and , then you get Omega Leonidas's card and use all of the ability cards listed above in your battle and use them all on your first roll.

P.S. It took me 8 times to pass it!!!
P.P.S. Let Marduk go first so you dont lower your g-power.