Ah, the L2. I have been looking at that. Very interesting flashlight. I have yet to hear from anyone who have bought one. Thread about the light here. I like it, although the reflector design could have been better as I described here in that same thread.
Im basically just repeating what B42 said, but better is subjective.
Warrior is smaller, lighter, cheaper, and probably more ergonomic/better to hold. Does that make it better compared to the L2?
L2 can handle heat better due to the larger head/size (assuming its got a pill), it is most likely driven harder and have more lumen output, if not, its most likely more efficient with more emitters. Not a huge difference in beam pattern but the L2 will have less artifacts in the main beam due to not having overlapping reflectors. Although it will probably have some "strangeness" in the outer spill due to how the light hits the bezel (similar issue with the Solarstorm raging). I dont think it will have less throw at similar current compared to the L3 (like B42 indicates). Probably very similar range due to the larger head.
As for size..
Warrior is slimmer compared to the gold SRK
Compare the head of the "solarstorm raging" (third from the left) vs the same gold SRK in this picture.. Quite a difference. Especially from the front.
(Pictures from my review of the Letterfire LF-868)
Might mention the L3 as well. One of the threads on that here. Here are some pictures where I compared the Warrior with the L3 and some others:
L3 have a fairly strange form factor, and not that high output compared to the size and emitter count. Modified Warrior (like in OP) easily outperforms stock L3 in terms of output.