The tough-tackling Kiwi was a key member of the Welsh defence that kept the star-studded BaaBaas side scoreless in Bristol, and is excited about the team's new defensive strategies.
"We were all pretty stoked about keeping them out," the 26-year-old said. "Our defence coach Clive Griffiths is introducing a different style and after a slow start to the game, it really came together.
"Now we're looking at a few more zeroes among the opposition this year. Defence is becoming a huge part of our game - it makes it fairly simple to win if you prevent the other side from scoring."
Parker - who is courting offers from Welsh and English clubs given the imminent demise of the Celtic Warriors - is looking forward to next month's tour of Argentina and South Africa.
"Back in New Zealand, we all grow up wanting to play South Africa - it's the really big Test - so it would be amazing to achieve that," he said.
"Like New Zealanders and Welshmen, Argentinians are really passionate about rugby, so that will be a great place to visit. Part of playing the game is the ability to see the world, and see it with a great bunch of guys.
"We've got a few injuries and this is a young squad, but there are a lot of exciting players in it."
Parker - who has discarded his trademark arm guards after beaking his left arm twice in 2003 - had a special word for centre partner Gavin Henson, who replaced the injured Iestyn Harris in the No 12 jersey after a season at fullback for the Neath-Swansea Ospreys.
"Gavin is a very similar player to Iestyn," he said. "He's good off both feet, he's a great passer off both hands and he has a huge kick.
"It's exciting to be going on tour with players like Gavin, who could really cause a stir over there."