Cheating with a legal item

[ishinken]

3. CHEAT can be played to make something that would normally be against the rules possible. If I have nothing in my hands can I play cheat on a 2 handed item to use it anyway even though I COULD use the 2 handed weapon?
The scenario that happened that made this an issue was that I had 5 hands and the card (Fiery hands I think) that gave you a +3 bonus for each empty hand you had. I then played 3 Handed sword (+10) with a cheat card and claimed I could use it aswell as still having my 5 hands empty getting a total of +25 bonus. My mate then claimed "well you can use the 3 handed weapon its not against the rules and therefore not a CHEAT"