Prove me wrong. I'm a lore expert on Destiny, so odds are I can refute any argument you provide that favors Destiny. Vegeta and Goku would beat the entire Destiny universe in a fight.
Lets also assume they know the mechanics for the VoG and Crota's End.
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If you don't know about Dragon Ball Z... Super Saiyans consume planets for power. Think about that for a minute... That doesn't compare to the power currently available in Destiny. They syphon the life force from the planet and use that as a power of destruction. In the process of battle the entire planet is further destroyed. Their ultimate attacks can destroy an entire planet in one shot, just look up "Goku's Spirit Bomb attack".