Were you by chance able to compare the Tikka XP with the Princeton Tec EOS? I think those are the more comparable models since they both carry three AAA batteries on the front of the head.

I am almost tempted to buy a Tikka XP just to compare it to the EOS that I like so much. Overall their flashlightreviews.com stats appear pretty similar. The big difference is that the Tikka XP is not regulated, which means its brightness decreases constantly through use. The regulated EOS' brightness will stay relatively constant for some time and then start decreasing.

Here are the stats from flashlightreviews.com

All numbers shown are as EOS/Tikka XP:

Throw Boost: 1042 - momentary, Tikka XP only
Throw High: 478/300
Throw Medium: 189/180
Throw Low: 50/72

Overall Output Boost: 2900 - momentary, Tikka XP only
Overall Output High: 1200/650
Overall Output Medium: 460/377
Overall Output Low: 120/146

Runtime (hrs) High: 2+4.5/(60)
Runtime (hrs) Medium: 9.5+3/(80)
Runtime (hrs) Low: 44+16/(120)
(time is regulated hours + unregulated hours)

I put the Tikka XP's runtimes in parentheses since these are published times that don't seem to match reality. Flashlightreviews.com didn't test actual Tikka XP runtimes at all levels.

Since the Tikka XP is not regulated, the high power light output drops to 75% in just 45 minutes and continues dropping to 50% in about 5 hours. The regulated EOS runs with a constant 80% output through the first 2 hours and then drops to 50% output in about 3.5 hours. The EOS is at 25% at 4.5 hours while the Tikka XP is also at 25% at 4.5 hours.