"Actives" and "Passives" are way too broad as categories to really make generalizations about. Some people will say, "Active pickups are cold, thin, and lifeless". That's wrong. Replace "Active pickups" with, "An EMG 81 in a bright sounding guitar", and the statement is now true. If an EMG 81 won't sound good in a guitar, then very likely a Seymour Duncan Dimebucker won't sound good in it either. They are similar sounding pickups. More similar, to my ears, than an EMG 81 and an EMG 85, even though the Dimebucker is passive.
The only popular active guitar pickups are EMG. The active EMGs are all either grey ( the most common ), creme, or white covered pickups with the EMG logo on them. Any other pickup is probably passive.