Oh yeah so when Mihawk mentioned he tracked down Don Krieg for 'fun' does that put him on mihawk's level?
But I see you're moving the goal post here, first it was 'roger called for sengoku so he's on his level', then it was 'but it only applies if they've fought before'. Even though observation haki bitch slaps that theory. So what's next?
Wrong. I have no time to teach you about the difference between official translations and the fanlations you've obviously been reading. See Viz. This has never been stated.
And since when does mentioning someone in the same sentence put them on the same level? Supernova are all mentioned in the same breath many times, we all know there's only one that counts.