Hatton would force Locche to the ropes and murder him with body shots. Locche was great awoiding head shots, but Hattons only real force was his body attack and that will make him a winner
Locche was on an entirely different plane from Hatton, as @Clinton said. He would toy with, frustrate and nearly shut out Ricky for a comprehensively easy points victory.
Wait what. You don't force Locche to do anything. Granted, the 72 version of Locche probably would lose to Hatton. In fact the past prime version of most greats at the weight class will lose to a high volume pressure fighter, but prime for prime Hatton will barely land a clean shot.