As the question said. Actually to show how complex is an Ai/decision tree one should count the valid path, but let's count the nodes that are simpler. So how many actions + conditions (no subtrees) has your most effective (in multiplayer) AI?
disclaimer: it is not true that more = better, but surely it is an index of how much a player is engaged.
old discussion: https://itch.io/t/47164/discussionshowi ... r-valid-ai