It doesn't - but if a cheat is a crack, or performs the same function in a different form, then it's against the AUP.

Cracks take different forms and I suppose in the context of that line of the AUP, they are referring to cracks that destroy or circumvent licenses.

If this guy succeeds, he'll have a crack that will ... dunno ... guarantee a high score or something.

It will be a crack. Would it be against the AUP? Only if that line refers to all cracks or only cracks that do harm or circumvent licenses/copyright etc.

That's the technical arguement.

The other emotional arguement is

"Does anyone want VB forums to be a place to find non-harmful cracks for all the games in game-land?"

If the answer is NO and the AUP won't prevent that, then the AUP needs to be ammended.