This is how to decide; if you hold markers really hard get the lv1 because you will turn off the luxe every time you do a dive. If not then it's about which one do you think looks better since they shoot about the same amount of pods (not that you'd ever shoot 10 pods in a game) off a 68/4500. So since physics hasn't changed there is no better marker it's what looks best when it comes to high end markers.
I have to disagree just because this is not true. First Dave Bains of Impact was shooting 11-12 pods at PSP WCO. The back player on my team carries 10 and shoots 8-9. In tournament paintball, this is common. Being able to control the opponent by putting more paint in the air wins matches.
As for physics, this is also not true. The physics of a spool and poppet valve marker are completely different-they get the ball out the barrel in different ways. Sure, once the ball leaves the breach, the trajectories are identical but the way the markers accelerate the ball to 300fps differ.