I reached level 123 using horses and a nag, with 6 angels, 40 marksmen, 30+ ducks, and 3 giants, stats 13-13 + oil. There were a lot of harpies in the center and a water elemental on the ground. A couple of days later, I teleported home, upgraded my archers, and stood near the opponent's Grand Order with 10+ titans.
At level 131, they attacked him in the main town; the stat, magic, and unit advantage was significant.
Thanks for the game.