Vegeta was able to hit Beerus a few times in his episode 8 Super Saiyan level while Goku at Super Saiyan 3 was not able to. Canonically, Vegeta has never gone Super Saiyan 2 before (unless you consider Majin Vegeta to be Super Saiyan 2).
So which level did he go to in this episode? Super Saiyan 2 or something ascended?