"Pretty disappointed."
Even Afoa admitted he was fortunate with the decision in his television interview.
"I'm surprised, but that's how it goes."
Afoa added he would "never say no" to a rematch, and said it was such an effort to counteract the reach and height advantage of the towering Gallacher.
"It's like fighting two guys at once.
"The distance you cover, it's double the workload."
Gallacher went in confident, having already beaten Afoa at April's King in the Ring tournament, and in the first round kept his smaller challenger at a distance with his constant head kicks and attempts to get his signature leaping high knee through the Aucklander's guard.
Afoa circled in the second round, trying to find some opening, and was still in the fight as he absorbed a heavy body kick to land a good left hook.
The velcro on Afoa's pants coming apart needed two stoppages and in the end a makeshift belt made from athletic tape was used.
Beginning the third round, Gallacher pressed the action with a barrage of jabs and kicks, but Afoa was beginning to find a rhythm and leapt in to score with a series of punches, momentarily backing the tall Wanganui fighter into the corner.
Neither man could gain an edge in the fourth round as both circled around, Afoa trying to muscle Gallacher into the corner again while he in turn kept working the high kicks like a boxer throws jabs.
Afoa nailed some brutal punches to start the final round and an angered Gallacher replied in kind with a series of kicks to the body.
He cycled away from Afoa's close contact and kept up the kicks and knees until the final bell.
Both men looked confident, waiting some time for the judges to make a decision, and Gallacher's disappointment was evident with the final verdict.
But it was such a close tussle, it could have gone either way.
Wanganui Chronicle scoring gave Gallacher the first two rounds, Afoa the third and fifth, and called the fourth round even.
