The result pushed them up to ninth spot - just two points behind seventh placed Edinburgh - and set the region up for a huge clash against Scarlets at Judgement Day next Sunday at the Millennium Stadium.
John said: "The Scarlets game is going to be a great occasion and I remember watching Judgement Day last year.
"We have Scarlets twice now before the end of the season and Connacht away too. It's important we finish well, keep this run going as long as we can and see where we end up in the league.
"We will keep playing the way we are, enjoying how we are playing, training hard and perform with passion and pride. If we do that we will get the results we deserve.
"We worked hard tonight and played some cracking rugby and thoroughly enjoyed the game.
"We will look what we want to take into that game. There are areas we can improve on, we know that, but the attitude has been superb.
"We travel home on Saturday and have eight days to get ready. It's a great occasion at the Millennium Stadium so we are looking forward to it," he added.
"It's close to us, you can't get much closer to the Arms Park, so hopefully we will have a lot of support and it will be a great atmosphere and a great day of rugby for the regional game.
"Welsh derby games are generally really good games and very passionate affairs so it will be some occasion."
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