Well think about it. In the first movie he fought off Goku, Vegeta, Piccolo, Gohan, Trunks, and pretty much anybody that dared step in his way. They all had to give their power to Goku to stand a chance and win. He was the ultimate beast in that one.
In the second one... Goten and Trunks were able to hold him off long enough for Gohan to come in. I mean even Videl managed to survive against him. They were kids. In the first one you had the strongest fighters struggling to keep up with him but in the second one you have 2 kids and a woman? At least to finish him off was good. But I was just disappointed that he wasn't as dominating of the kids and Videl as he was in the first movie.
Vegeta is definitely my fav character. His only real shining moments was his assist in defeating Cell providing that distraction before Gohan just unleashed. And for the record... that Gohan was pure bad ass. That Gohan could beat anybody. Almost
But there was that moment and then when it looked like he defeated Fat Buu when he turned himself into a bomb. Other than that Vegeta just didn't have that defining moment. Always kinda irked me. It was always Goku, and that one time it was Gohan. But Vegeta definitely did make his appearances. Thought he was gonna have a chance against Bojack but... yeah that didn't happen.
Although I do wonder... WHAT IF Vegeta would have made it to Grand Kai's planet and trained there like Goku did. How much more bad ass would he have been? We saw what it did for Goku.