Guardiola's team have been focused on rewriting the record books since clinching the English title nearly a month ago and they added one last landmark achievement on the final day of the season.
They won 32 of their 38 games, accumulated 100 points, scored more than a century of goals, and finished with an incredible goal difference of +79. "It was an wonderful finish from Gabriel".
"Numbers are numbers, they are the outcome of the way we played. You can not achieve 100 points if you drop games and think it doesn't matter", he said.
"One hundred points is a lot - 50 points at home, 50 points away. Wins at home, wins away - everything was flawless this season and we finished the way we deserved to finish".
Lambert succeeded Mark Hughes in January but Stoke's relegation was confirmed last week and this win was only his second in 15 games.
"The important thing is in the games we tried, we tried, we tried", Guardiola added.
"I want to win everything we can!"
"You cant say they are a great team yet, they've given us great moments this season but great teams go on to win successive titles, great teams are successful in Europe", he said. Southampton came close to breaking the deadlock themselves in the 78th minute when Dusan Tadic rounded Claudio Bravo, only to see his shot cleared off the line by Fernandinho.
The 52-year-old former Sheffield Wednesday boss was appointed in December with Swansea bottom of the league and five points from safety, and he oversaw a dramatic turnaround in form before a late-season collapse ended the Welsh club's seven-season stay in the top flight.