Very nice video. Personally I rather sit in fast and agile attack chopper than in slow-moving but highly armored tank.
Personally I'd rather sit in an IFV...but that's a matter of taste.
The Helicopter has much better chances is staying undetected and moving away from the fight fast enough.
So in most cases it will score the kill before the armour can even react.
In a duel situation...my money will be on the tank (esp. with state of the art FCS like the M1A2).
Sabot round is just much faster then anything the Heli can spit out