Speaking post-match, Roos was pleased with most areas of his team's game, but said turnovers and skill errors by hand and foot proved costly.
"Physically, I thought we matched them and I thought we tackled really well, so the things that they're actually the benchmark at, a lot of them we actually did really well," he said.
"The difference in ball use was why we lost by 10 goals."
The loss was the Swans' fourth from seven rounds this season. It now means the red and white has yet to string back-to-back wins in 2009, but Roos said his team's inconsistent form was due to the evenness of the AFL.
"It's just a reflection of the competition and we happen to be playing away every second week. It's a really close season in the three to 13 bracket [on the ladder]," he said.
"There's a mix of teams in the middle, all pretty even [and] that's where we're at. We're a middle team that's pretty even and trying to bring young kids in.
"I think our young boys struggled today – it's a big assignment down here, so that's a big learning curve."
The Swans have been heavily hit by injury this season, and Roos said his team's 3-4 win/loss record was a reasonable result given the amount of matches missed by personnel so far in 2009.
"With Mick [O'Loughlin] and 'Hally (Barry Hall) being out and a number of other senior players not playing and younger players – we're a 3-4 team and we've just played the best team in the competition," Roos said.
"If our ball use was better, we're probably a six- to eight-goal worse team than Geelong when we're playing at their home venue.
"I think it's a fair reflection of where we're at as a club and where we're at as a team."
