I'm interested to see how the anime will handle the newest chapter (I cut a lot of stuff out involving Trunks, since the main interest is likely Cooler lol).
Kanba (The new Saiyan) has such a dark aura that he blasts Goku with it which corrupts Goku and sends him into a berserker state, strong enough that he has no issues handling SSB Vegeta, but then Cooler shows up. Fu insults him by saying he should have got his brother since he has another form which triggers Cooler who says some shit that's essentially like "Anything my worthless brother does, I can do better" and goes Gold. He then has no issues with knocking out Berserker Goku while using barely any of his power, saying Goku only survived his blast due to the aura of that new Saiyan enveloping him.
I imagine there will be some things changed, like in the previous episode where Fu deflects a blast from SS4 Xeno Goku, in the Manga it was a blast from base Vegeta.
Here's the chapter if anyone's interested. This translation is a bit different from the first one I read, the one I read Cooler stated he barely used any energy but this one has him saying he used more stamina than expected, so who knows.
I'd wager this one is more accurate if he's suffering from the same stamina issues Frieza did when he first used the form though.