Warriors opted to go for tries rather than penalty points during the13-3 home defeat and were left without even the consolation of a losing bonus point. The Scotstoun men are now under pressure to get their Pool 3 campaign back on track when they face Cardiff away this Sunday.
The Warriors went for the corner on a number of occasions, including heading into the last ten minutes when they were still three points shy of losing bonus territory.
"I felt we had good pressure on them at lineout time and they gave away a couple of penalties, so the decision to go to the corner late in the first half, we didn't come away with any points, but I thought we had good ascendancy there," explained Gibbins in The Scotsman.
"Maybe in hindsight we'll look at it and it could have been the wrong decision, but at the time I felt we had them under pressure."
Gibbins was frustrated to come away empty-handed from an afternoon of intense physical exertion from both sides.
"It's pretty disappointing," said the Kiwi. "We had plenty of opportunities to maybe put more pressure on them, but we didn't look after the ball well enough and silly mistakes in the wrong areas of the field took the pressure off. They had a couple of opportunities and took one of them and scored pretty early on and that's all it takes sometimes in these big games."
French referee Mathieu Raynal was not a popular figure with the Scotstoun crowd but Gibbins conceded that the Warriors players must take some responsibility for not getting the decisions.
"We've got to be better as players to recognise how the referee's reffing a game," said the former Hurricanes man.
"So we've got to be able to go to those rucks quicker and nullify those attacking players going into those rucks. I think he did a good job and we just need to be better as players to adapt to him, so I think it's more on ourselves."
Gibbins accepts that Glasgow are entering must-win territory now heading to the Arms Park. "You want to win every game, so it's no different in Cardiff this week, but we'll have to take a look at how we went tonight and then move on to Cardiff," he said.