[dhaivatpandya]

It seems pretty unlikely that the data wouldn't be normalized by some metric of intensity of use since this is pretty much the first thing anyone would think of. Normalizing even by something as simple as "number of websites visited" would, I imagine, significantly reduce the contribution of such factors to the differences observed.

[matmann2001]

Or they just ignore normalization, since it's for PR and not an actual scientific study meant to withstand scrutiny.

[harigov]

The fact that they spent so much money in hardware to test the battery usage and the amount of effort they put in to improve doesn't seem to imply that this was just a PR stunt.

[matmann2001]

You underestimate the value attributed to PR by large corporations.