I just went to check on that and they do have
TurboBoost on the 2AA Clicky:
ANSI FL-1 lumen: 222
5/154/23/0.5
That little 5 there I believe means it steps down after 5 minutes to 154 where as the P100A2 R3 bin ANSI FL-1 lumen: 198/40.
When the XT-E thread first came out there was a ton of speculation and I wondered why they chose it. I still am wondering from reading this thread. We see it is efficient. I guess we'll have to wait and see for sure when it comes out.
Just curious but what are your thoughts of the XT-E over the XP-G that make you want it to be the standard? I never was a fan of the more floody/larger reflector XP-G/XM-L beam profiles that is seen with those emitters. I prefer the good ol' XP-E or XR-E. Now XT-E maybe? Can't wait to see what these things do. This could me more happiness arriving in the mail.
It does not step down, they just don't publish what the 'step up' is. Yes, they still do the TurboBoost thing, but they don't bother reporting the higher than normal turbo mode lumen figure. Look at the D25 twisty series, why does ET even bother telling you what you are getting for that initial 90 seconds. [I guess for inquiring minds]
If you are looking for a dedicated thrower, the larger thermal mass of the P100, plus the larger head & smooth reflector means it will do the job better.
The xp-e, when it was launched, was only 'rated' to 700mA. Then after a few month [IIRC] Cree 'suddenly' said, it was good for 1000mA. [shocker]
The xp-g when launched was rated at 1500, even with double the die size.
This new xt-e will have the output of the xp-g, efficiency of the xm-l, and the throw of the xp-e. This changes the paradigm [rut] that we have been stuck in for the last five years, if you want more lumens & efficiency-go bigger.
ET more/less positioned the 100-series as budget throwers. By moving the the xp-g they have increased the lumens, but lost the lux. The xt-e will fix that.
A special HO T100C2 with a blazing 1.8 amp xm-l would make a good shotgun light, while the standard 1.2 amp + xt-e would make a great rifle light.