Don't forget LL can do smthn called "skating", which is just to dodge right before the point of impact of a grapple, giving tons of momentum, and in turn speed
For those who want to have perfect gem augments/pearls for Lunar Lancer the empowered gems will have a total of 9 on Physical and 0 on Critical (all 3 light on cosmic), and 4 on physical and 14 on critical (both cosmic have 3 on light). However, like Scyushi says, the difference is very minimal.