That TR-3T6 is know for easily killing single emitters.
A bit more info here.
Yes, Id much rather take an XM-L2 @ 6A vs XP-G2 at 4A.
Id even taken an XM-L2 @ 5A over and XP-G2 at 5A. But Im no fan of "pencil beams", and I prefer some decent output..
I had XP-G2 at more than 5A in this beamshot comparison (STL-V6 with copper pill). I was not impressed. I was much more happy after I changed to XM-L2.
These days, I prefer XM-L2s as seen in my latest beamshot comparison of throwers..