Wow, outstanding pocket torch! The lumens reading you are seeing is basically at the Match's tested level for an XP-G2/SinkPAD at 3 amps, here: https://budgetlightforum.com/t/-/16621. I have a similar light that is at or near the Match #'s with an XinTD X3 mod with a XM-L2 U2 on Noctigon I posted about here: https://budgetlightforum.com/t/-/20644. What these 2 builds have is common in incredible heat sinking, I believe. Not familiar with the efficiency of TIR optics, but I think it's pretty high.