Try it on your joy then try it on your keyboard with the numberpad, tell me which you think is easier

Aiming during a furball with the keyboard is significantly easier because you only have 2(6) modifiers to really care about, but when you're talking about an unmoving dot on the screen the joystick is significantly faster to it, and faster to settle.
Feather touches!
Although it can be a ***** on some joysticks, even the Cyborg series (which, I hate) can handle it ok in FS.
Naturally it is easier to swap to the mouse regardless of which control interface you're using :<
Also, although I didn't stick with it for long (because the gain in skill level would have been so minimal in the end) I actually found no deadzone/max sense to be easier than any significantly noticeable deadzone and lower sense, just feels more natural :<
(again, with a cheapy cyborg evo), wonder if it helps against the ramping playing like that.