what if, during the 2nd time Belial attack the Land of Light, Mebius and Hikari Fused into Phoenix Brave, would they defeat Belial that time and stop the invasion?

Alright! this has been a question ever since i was 6 years old, I grown up with Mebius, little kid me was expecting Mebius to fused with Hikari when confronting Belial considering how strong he is, I also was expecting Mebius to turn infinity along with the Ultra brothers, imagine my horrific experience seeing Belial turn ultra brothers into jobbers 😭. so in this what if Scenario, instead of confronting Belial heads on, Mebius and Hikari fused into Phoenix Brave and start Fighting Belial, would the movie end right there as the Fusion beat Belial? i honestly think that Phoenix Brave would defeat Belial during this time!