Conflux is definitely stronger. Only Phoenixes have the advantage of going first due to their high speed (and going first, as everyone knows, is a 100% advantage when casting spells... any spell can decide the outcome of the battle)... by sending Phoenixes to their death first, after applying a speed boost (Expert skill), you can achieve a significant number of Phoenixes, so that even an Archangel will go after the Phoenix, which means the Castle's archers are no longer an advantage! In principle, a Castle without archers is the end of the game... Griffons are insignificant, Crusaders can put up some resistance due to their repeated attack, and the beloved horsemen can take out our beloved Phoenix in one go, but the Phoenix will resurrect... (I didn't take the Archangel into account because he has two options - either resurrect or attack our archers in the Conflux)... we shouldn't forget about our elemental magic, which destroys everything around without any response and cannot be enchanted... 100% in this battle, even with an equal number of units, Conflux wins!
That's funny. You need to consider the development of this Castle, not just a battle between equal armies at the end