I like being able to keep my downloads going while not actually being in firefox.
also chrome seems to be terrible at resuming downloads.
Minimize? I just started a download in FF and after closing the main window, it was still using the same amount of memory. So I'm not sure what your point is.
I've found that the server seems to play a big role in resuming downloads, I've had success and failure with both Chrome and FF (I haven't used FF regularly in a couple years, so maybe its improved).
I'm not saying one is better or worse than the other, but when you say something is the worst, it helps to be able to back it up.