Not to discredit their results, but what it shows is that users who used Edge consumed less power than Chrome or Firefox.
Whether that means Edge is more power efficient, or devices where Edge is used more often are more power efficient, or users who select for Edge tend to visit sites that allow Edge to be more power efficient isn't clear.
To be fair to both sides, this is a really hard thing to measure.
Whether that means Edge is more power efficient, or devices where Edge is used more often are more power efficient, or users who select for Edge tend to visit sites that allow Edge to be more power efficient isn't clear.
To be fair to both sides, this is a really hard thing to measure.