I agree; there is no way that the T100C2 is making 249 lumens OTF. The T10L should be very similar to the T10C2 (so about 250 lumens OTF), and it getd only 2 hours of runtime. The T100C2 gets about 3 with the same battery, and shouldn't be all that more efficient. Therefore, it must be drawing a decent amount of current less, making it not 250 OTF lumens. I would expect that it is drawing 1 amp at the most; my T10L draws about 1.3- 1.4 on a fresh 18650.
Of course, the T100C2 has more throw, but that is because of the small die size relative to the smooth reflector.
The T10L has a very nice beam that has a very nice spot/spill transition with virtually no rings at all. It is very nice for lighting up large areas.