SP Super Gogeta RED comes with two Strike Arts Cards, whereas SP SSJ Berserk Kale RED’s held Arts Cards are mixed. This is significant for a number of reasons:

For starters, Strike Cards have always made performing Combos much easier due to the cost. If you change the deck to a 6/6 deck, you not only make SP SSJ Bardock BLU significantly worse since his main focus is Melee Damage, but SP SSJ Broly PUR is hurt as a result too.

SP SSJ Broly PUR is listed as a “Ranged Fighter” but after transformation, his Strike and Blast Attack stats are almost dead-even. The fact that Strike Cards are cheaper coupled with SP SSJ Broly PUR’s Blast Armor--which also increases his Damage if his Clash of Powers Unique Ability is properly utilized--means he’s would much better with a 7/5 deck than a 6/6 deck.