I own bothe skis, Invaders really blow fujatives out of the water.
They're lighter, poppier easier to butter yet a little bit more stable. Also it's a lot easier to make slow round carving turns on invaders.
Fujatives I will say are more durable, i have yet to get a core shot and Ive ridden over nails, wood, rocks, concrete, in the parking lot, down a city street...etc. And the only after all that did an edge begin to pop out.
Fujatives are great for urban, but if you want a fun park ski invaders are the way.