[bialpio]

Not sure if Opera has it on by default - all they say is that it is build-in so that somehow makes it okay to use it and compare apples to oranges :)

If I understand both tests correctly, Opera ran with adblock and battery saver enabled (those are apparently not default settings), versus Edge without adblock, on sites which supposedly are ad-heavy - this will bias the results towards browser with adblock enabled.

[cptskippy]

Exactly, it's like saying your bus with no passengers gets better gas mileage than your competitors bus with 60 passengers.