User blog comment:Mich, Michele & Kuhla/Future Units Preview/@comment-162.219.22.85-20151220070843/@comment-26336535-20151223003222

Nope

Mifune's appeal is that he's free and a very strong nuker. You can grind a bunch of him easily, get a couple of breaker types, and you already have the main portion of an OTKO squad.

Luce may be able to deal massive single hit damage, but that's only after using his SBB several times. That makes him perform worse than Mifune where Mifune performs best: Arena and OTKO.

Other than that, Luce has different uses from Mifune, so you can't really compare Luce's other properties with Mifune.