Shadow is a sad black hedgehog that wants to to trick Eggman into using the Eclipse Cannon to end the world because of what (((they))) did to Maria, only to realize that it was Gerald who brainwashed him into doing it, and helped Sonic stopped The Ark before it was too late

Vegeta is salty about being Freeza's pet, salty about Goku pushing back his Galick Gun, salty about Goku beating the Giynu Force, salty about Goku becoming a Super Saiyan before he did it, salty at Goku SSJ3, salty about always being number 2

They are not the same