I think FPSSJ ki > standing SSJ2 Ki is possible given that Kibito was told that he can't imagine the kind of power the 3 Saiyans displayed while he was dead, but with a 50x difference rather than 2x I can't really see it be the case here. Beerus wouldn't be impressed by any of the SSJ forms...
Vegeta getting up from Kid Boo's assault was anime only. In the manga Vegeta didn't land a single blow on Kid Boo and straight up got his ass kicked in one minute.