The Quark AA R5 will probably be sliiightly brighter, but it won't be much of a difference. The big difference will be in beamshape. The XP-G in the Quark will be more floody, with a large hotspot. The D10 will be a bit more focused of a beam.
This beamshape will probably make the D10 appear a bit brighter if you confuse lumens and lux, but the big, bright, floody beam of the Quark is very useful for close-up to medium range work.
Both good choices though... output is good enough on both of them that it comes down more to personal preferences for UI, beamshape, etc.