To me the whole "pacifistas lasers come from Kizaru" shit never made sense. I might be wrong, but from what I recall that idea came only from Drake, who has nothing to do with science, and not only Vega had lazer tech in his old lab(wich was used by him when he was still a child) but Queen and Judge were also able to create lazer tech, and I really doubt MADs had access to Kizaru's blood even if he was just a vice admiral at the time. I think Drake was only comparing the lasers to Kizaru's powers, since he is the main lazer guy, but the lazers themselves have nothing to do with his powers, they are just regular lazers like the ones we have in the real world, thats my guess at least