If you fly them at the same weight the L will certainly outshine the J or G.
The problem is getting it down to the same weight.
The L is definitely the best of the 3 overall but it is heavier so you cant do the same things with the same amount of fuel on board as the others.
But the addition of boosted ailerons and dive flap certainly make the L more capable than the J, especially for guys who fly a 3D fight.