That's entirely possible :)
But the point of the poll was probably to argue about who of these three is the best and under what conditions.
In my opinion, Necropolis definitely won't be the leader on a small map and at the very beginning of the game, because it's difficult to get Liches, upgraded Vampires, and Riders.
In the first few weeks, I think the advantage will be with Conflux and Tower due to the presence of archers...
By the end of the game, Necropolis switches to strong troops and hordes of Skeletons, which Tower and Conflux can only counter with Phoenixes, Magic Elementals, or Nags, Titans, and many Golems.
But Conflux always has the opportunity to study a specific type of magic (Magic University) that would be most beneficial in these conditions.
Therefore, I find it convenient to play with Conflux at the beginning and end of the games, which is why I usually choose it. :)