He said he wouldn't hold back and then didn't, you're the one creating a headcanon that he was using 2% of his power or something.
There is no headcanon. Mihawk did nothing during Marineford because he didn't have to. You completely avoid answering my argument about why other Warlords did nothing too. Because it's only Mihawk that you intend to clown for Marineford.
Mihawk wasn't obligated to destroy Whitebeard Pirates or shift the tied for WG's benefit. You know how flawed the Warlord system was. The system itself was more for the pirates than for WG.
It'll never happen, Oda's clearly going to worm his way out of including Shanks in Mihawk's title, it's abundantly clear that Shanks is his self-insert, he's not going to make Shanks look bad just to make Mihawk look good, especially since we've already seen just how badly Oda can make Mihawk look in Marineford lol.
I don't know where you got that: " He's not going to make Shanks look bad just to make Mihawk look good". I never said anything like this or you are trying to put words in my mouth to fit your narrative.
Mihawk and Shanks are on the same level. No matter who you like better or who you prefer to win if such a fight would occur at this point in the story, it is not ending in less than extreme difficulty.
Mihawk will get his due soon and your agendas will be flushed into the toilet. Shanks doesn't have to crumble for Mihawk to look good.
Small spoiler. They will both look good and op as fuck.