Mmm, well they changed the scoring system recently. It's out of 100 now, so there are technical judges and artistic judges or something. BUT the GOOD way of scoring had these clickers like at carnivals. Basically, do something well, get good points, do something badly, get a negative point. So dropping a yoyo used to be 3pts off (heavy as penalties go), but now it's just one. So I only lost 2pts for that... I lost 6 points, so the other 4 were just my screwups. So to answer your question, dropping a yoyo is not good, but it's better to go with more advanced stuff and switch yoyos than go basic and use the same one. Ideally you should go advanced and use the same one.. but that's not usually the case. So no, changing yoyos itself did not really kill my points that much.
Wait hold up your brother yo-yos?