I got the Q8 numbers from a post by CivilGearReviews, which cited alleged mfr test runtime results. Note the “Group 8” data line in the chart.
CivilGearReviews thread
Not saying that I’ve done anything to confirm accuracy of those numbers, though.
I’m not comparing max output to max output, but rather m/l equivalent lumens of output.
Runtime of the LT1 at high setting has been mentioned by several people, and GreenCampfire did a runtime test and posted a graph showing almost 6 hours before output fell off sharply.