Seems like the critical piece of info is the actual drive voltage of the LEDs and actual LED drive current. That will allow us to tell whether its a 6 die or 4 die Ostar. I am not sure if the 1.5A answer was battery current or LED drive current. We need both.
One thing is sure, the 10W spec has to be in error. To me, this is no big deal unless it they also give the wrong the lumen output or runtime specs. Admittingly, it makes it a lot more difficult to verify the specs when misinformation is in the datasheet.