Originally Posted by Evil Vegeta

Vegeta was a SSJ2 against Kid Buu, where was the electric at that point?

Gohan said he powered-up considerably" since the last battle, in which he fought Broly as a MSSJ. Gohan was stated to have grown weaker during the seven years in which this movie takes place. If Gohan was stronger then he was when he fought Broly as a kid, he was referring to SSJ2. He wasn't stronger then himself as a kid in any other way.