I have an idea that could work and be not only beneficial but help both companies. First let's remember how Sting went out on top as a winner. Now here's what I'm proposing.
Put Okada and Takeshyta in the C2 and have both of them go undefeated, no questions asked. They can use the other competitors to showcase some future potential main event stars, no need to bury anyone.
Then before the final have them cut a promo and Okada be like, since you so confident, how bout you put the iwgp title on the line as well at Worlds End. Have Okada win the match and the title.
Reason being that recently Okada challenged Tanahashi for his final match at Wrestle Kingdom and what better way then to have him go out as champion. He can vacate the belt after thanking the fans at end of match or whenever after but it would be a good moment for him and NJPW can figure out a plan after to crown a new champ and build for their future.
Put Okada and Takeshyta in the C2 and have both of them go undefeated, no questions asked. They can use the other competitors to showcase some future potential main event stars, no need to bury anyone.
Then before the final have them cut a promo and Okada be like, since you so confident, how bout you put the iwgp title on the line as well at Worlds End. Have Okada win the match and the title.
Reason being that recently Okada challenged Tanahashi for his final match at Wrestle Kingdom and what better way then to have him go out as champion. He can vacate the belt after thanking the fans at end of match or whenever after but it would be a good moment for him and NJPW can figure out a plan after to crown a new champ and build for their future.
I dont like that for Take. Wish he could beat them both before Tana retires.

at you throwing out the booking of WK 20 just so AEW can get a "bigger" PPV match 