Either of them could do it. Vegeta probably would be the better choice. Goku hears about the VoG, rips the door open gets killed by oracles. Vegeta just destroys Venus with a flick of the rist. And Crota? Vegeta vs Crota the battle of the Princes. And don't even mention the fallen. Tien or Krillin could slaughter the fallen on earth, go to the reef and kill all of them there and be back before lunch.