Combination to beat Hades Kerbecs

Hi bladers from all around the world.
In 2 weeks my son is participating in a Tournament.

He has lots of beys but lately Hades Kerbecs is the "favorite".
He wons every battles.
I would like to know what beyblade or parts combination can beat Hades Kerbecs.
Because if an opponent has also Hades Kerbecs my son would have tou use a bey that can beat him.

Is Hades Kerbecs with Earth Eagle Performance Tip stronger than Hades Kerbecs with original Performance Tip?

Thanks!

You should use the "Build me a combo!" topic, people will help you there.