Jackson's trainer and owner of TGA Box, Chris Walker, thought his man had won but had few complaints with the judges' decision. Between rounds he could be heard ringside imploring Jackson to up the intensity and throw more punches.
"I actually thought Gunnar was a little off the mark to be totally fair. I think it was a close fight. The rounds Gunnar won, he won clearly and all the other rounds were close. A lot of people thought it went Gunnar's way and I think I saw it that way too that he did enough to nudge it but it was a relatively close fight," Walker said.
"Obviously the judges saw it that way. Gunnar came on strong in the last part of the fight. In the first part of the fight I thought it was relatively even and the last part Gunnar won a lot of the later rounds."
The excellent commentary team of former champions Mike Angove and Monty Betham were full of praise for Jackson over his long career but wondered what might have been had he a knockout punch.
Walker agreed with those sentiments but said Jackson had other qualities that made him such a respected fighter over the years.
"Gunnar has always been a very durable fighter and can go the distance with world-class fighters. He always trains well considering he works long hours but to be fair, he does lack that one punch with knockout power and it has always been the case.
"He is gutsy and gives it his all. He stunned Brock numerous times but couldn't quite finish him off."