16.9V is the maximum voltage, typical rating would be 15.2W according to the datasheet at 85*C. If you are rating like CREE, you assume maximum binning (1600Lm @ 1A, 15.2V) and 20*C temperature which boosts the lumen rating by 7%, so now at 1712lm @ 15.2W, so roughly 112lm/W when comparing to a CREE. But like I had mentioned, its a lower lm/W rating due to the sheer minuscule size of the thing. It's hard to get an appreciation of how tiny the emitters are until you have it next to something like the XML2. Which is fantastic for beam pattern control. That's why chip selection for automotive lighting engineers (myself) I go based on chip emitter size, color control (how well will it maintain it's color temperature throughout different thermal profiles, OSRAM black flat not very good at this), and then the lumen amount. At these lighting conferences all the big name chip companies like Lumileds, Nichia, Osram, dong feng and more were going on about their research into reducing the emitter size even more, while maintaining the same lumen amounts.

Other industries focus on other things, like architectural and residential lighting focuses on CRI and Lm/W since it's a marketing point.

Should check out the new Jaguar F-type headlights, and Range Rover Velar to see just how tiny the actual optics of automotive headlights can become thanks to these new high luminance chips. The actual headlight housings themselves are big, but the actual optic? No more than an inch tall, and maybe 4" wide. So can imagine that if it's acceptable to have two optics that big on a $100k car that can do god-knows-how-fast, then a similar optic and chip will be pretty awesome for a bike.