General

Kaiser without a doubt....

Luminous is a meh bosser due to having to swap skills for maximum damage output

Kaiser.

Pretty much Kaiser since Magic attack stuff is hard to come by as well.

Kaiser by far

Lumi is a mediocre bosser, so kaiser

Kaiser has more potential, with Wingbeat and without.

let's say they both had the same amount of infinite funding.

sorry for wrong section btw. was supposed to be in general.

My guess would be whatever class you fund more.