For comparison, the modded M12 vs. my modded XinTD X3 (mod thread here):
Modded M12: fresh KK 26700 5000 ICR 6.10A, lumens: 1,612 @start - 1,455 @30 secs, throw: 130 kcd @5m
Modded XinTD X3: fresh KK 25550 4200 ICR 4.56A, lumens: 1,469 @start - 1,448 @30 secs, throw: 76 kcd @5m
The drop is higher on the M12, but there's more to lose with a DD at much higher amps, while the X3 is using a stacked Nanjg. The X3 has advantages with sheer mass, big chunky pill top, but of course it weighs a ton too, but the smaller width reflector results in the lower throw, but respectable for it's size.
Note: all measurements done on my home brew PVC lightbox and $35 meter, so no guarantees 