lol, no.
2 x AA in series is capable of putting "slightly" MORE current through a driver board to a single die or parallel connected dies LED array, AND at a little higher than double the voltage (because the driver board itself has its own Vf drop across it which is double the % of loss from a single cell (1.2V to 1.5V) as it is from twice as many cells (2.4V to 3.0V). Further the lower the voltage boost the more efficient the driver is, as it relates to duty cycle.
Wiring in parallel is worse than in series for the above reasons, for cell chemistries which are a fraction of the LED Vf . For higher voltage chemistries it depends on the driver design. You can certainly wire in parallel to experience less voltage droop too, but unless the driver has pretty bad regulation (and some definitely do!) to the point where it's driving the LED at a lot lower current from a lower driver input voltage, then each cell in parallel will still supply more current than if the two were in series, and voltage droop more, requiring even more current if the driver regulates well. It's not much of a difference until a reactive driver regulates to make it one.
Now let's put all this in context. The original question was about a 1 x AA light that does 500 lumens, but it only does it to show-off, only for 3 minutes according to Zebra. That's impressive for such a little light, but meaningless to those spending the money on a larger (2 x AA length) major brand who would just get a 18650 powered light instead of 2 x AA, one that can run at 500 lumens as long as you want it to.
There's too small a market for 2 x AA @ 500lm, but you could probably throw together your own custom build to do it if you want to. Just make sure your head is 'sinking heat well enough since most 2 x AA designs aren't engineered to deal with that much.
