Originally Posted by
Rowe
Because I already got LNC and ARC to 50 before the patch and I don't want to dedicate another 2 months to getting the next class to 50.
That was the promise of the physical levels, getting to 50 physical level would make ranking up other classes easier than starting from scratch. But SE removed physical level, now a new player level 0 in all classes would level at the same speed as a player who is rank 50 in 2-3 classes. Power leveling compensates for this problem by allowing an established player with friends who help him/her level faster.