i owned both. I had a luke 3 BFR HSS and i still have a fiore.
the Luke was heavy but sounded great. the preamp makes every position equal volume and the onboard boost is super cool. Im a pretty tall guy and a luke body feels like 80% the size of a strat, so it looked really tiny on me. Plus the neck felt tiny. Basically always felt like andre the giant with it.
the fiore is...just too good. Its every bit of a strat but more and has better tones to me. I wore out the frets on mine and went for a stainless refret. Fiore neck is very much fender C feeling. The Luke neck is a soft narrow V.