The goal came just four days after Robson's opener for Vancouver in the 2-2 draw against LA Galaxy and he was delighted to be able to knock the ball past Quakes keeper Jon Busch to give his side victory.
"Just hit it as hard as I can," was Robson's response when asked what he planned to do with the spot-kick.
"That was it. If you hit the penalties hard, even if the goalie has picked the right side, it still got a bit of power on it and it still might not be able to save it."
Vancouver took the lead in the 20th minute through former New York Red Bulls winger Dane Richards with his first Whitecaps goal before Alan Gordon's 38th minute leveller prior to Robson's winner