The movie is only 84 minutes long. So even 10 minutes is a fair amount of time in the movie. Piccolo was present, but he certainly did not hog the screen. My guess would be that 10 minutes sounds about right, though I might say he had more like 15 minutes. Since he had time early in the movie and then most of it at the end.

Oh I know I have a list of things that I can easily rant about that they did wrong and didn't have or whatever. But in the end the movie surprised me at not being horrible like I planned. But I went in with zero to possibly negative numbers for expectations. I planned for it to completely bomb out. So from that point of view it really could only go up from there if it managed to do a few things right. And it did.

I'm not sure if I would agree with some reviewers words in saying it is the best adaption of a video game or anime, but seeing as the list is pretty poor to start it is not a high hurdle to get over. It is certainly better than most of these types of adaptions.