About AI – the intelligence of the computer.

And which game has better AI, Heroes of Might and Magic III or V?

Currently, the AI is more interesting in Heroes of Might and Magic V, but that's just for now. In Heroes of Might and Magic III, all its tactics are already known and described. If you delve deeper into Heroes of Might and Magic V, you'll probably find that it's also just a PROFESSOR-LOUP :D