I feel bad for not commenting the last couple of rounds, real life plus KWC stuff, but I actually think Fan has this. Shin Godzilla being down doesn't help matters but Keizer Ghidorah should have enough power to break an AT Field and with the others aid, will make quick work of King Ghidorah and Israfel even if Kiryu is turned into shreds. All around they just have a better advantage in power iirc
The numbers disadvantage is negligible given Kiryu's lackluster durability and Israfel's division, but losing Shin's opening barrage sucks. Israfel should still have the edge versus Sachiel, but X upgrading to Keizer Ghidorah and going into things fresh means he has the edge over King Ghidorah now.
Where my team still has the advantage is Israfel's ability to split up and either aid an ally or (more likely) double-team a target. Sachiel and Keizer Ghidorah's attacks are straightforward and linear, and neither has much in the way of agility. Kiryu does better in those regards...but even one split Israfel is more than a match for him (or King Ghidorah for that matter).
No individual kaiju on Fan's team has a good matchup versus Israfel, and King Ghidorah has the staying power to prevent a dogpile. If the offense of two EVAs wasn't enough to defeat Israfel without perfect coordination, I don't see Fan's team accomplishing it either thanks to Ghidorah's back-up.
Voting for myself. Israfel's general survivability and division are just enough to exploit Sachiel and Keizer Ghidorah's straightforward fighting styles, with King Ghidorah keeping at least one of Fan's kaiju occupied for a while (or just killing Kiryu).