Using an Olight S10, I managed 1 hour and 11 minutes of runtime on high using the Yezl’s, compared to around 55 minutes runtime as tested in an Olight S10 review, so, although the Yezl’s don’t come out on top in testing, they do seem to perform very well in use.
In some lights you will get longer runtime, if the LiIon battery voltage is slightly low. I.e. a good battery with high voltage will not have as long runtime as a cheap battery with lower voltage.
Compared to the other 16340 batts reviewed by HKJ, I think it did great as it looks to have the 2nd highest capacity (more than the AW) of the reviewed 16340s behind the Eagletac.
But shouldn’t this be expected (longer runtime with Yezl vs. AW) since you measured the Yezl with a higher capacity than the AW (per your review charts)?