The experience gained in battles is a perfectly adequate compensation for the lack of morale in neutral creatures and the lack of experience gained by our troops in battles against un-upgraded neutral creatures. Removing experience from bots would make the game too easy. It's not that difficult to get used to the fact that attacking a bot after level 114 carries the risk of taking damage.
The excessive experience gain for computer opponents in Warlords (and it's "excessive," as there was also experience gain in Trials, but not as fast) sometimes leads to unfortunate situations, for example, when there's only one path from the spawn point, and right after the exit, there's a computer opponent's spawn point, and you can't pass by without engaging. You enter, and at level 112, you're killed in the field without any chance of maneuvering, by a combined army with 3-4 upgrade levels. Yes, this doesn't happen often; in most cases, issues with the computer opponent are resolved more or less normally, but encountering such a situation in a tournament is not a pleasant experience. That's why I'm in favor of returning the computer opponent's experience gain to the Trials level.
