Geelong were ranked the #1 defensive side going into last week. That's not the result of a team whose mids and forwards don't work hard enough with a bunch of inexperienced defenders!! Think you need to take another look at your analysis to be honest.
They've built that record largely off strangulation at Kardinia Park. They concede 56 points per game down at the Cattery and 80 points a game at other venues.
They don't put the pressure that they used to in their forward lines. Narkle, Menzel and Hawkins had one tackle each (Buzza had 4). Defensively, Menzel makes Atkins look like Talia. Ablett has slipped from his career average of 4.3 tackles per game to under 3 this year, and seems to pick and choose his times to defend. Guthrie is way way down from his career average of 3.8 per game - he's had 8 tackles in 6 games. Duncan's a very good player, but at under 3.5 tackles per game he's no Bartel (4.3) or Kelly (4.77).
What's also clear is that the 2018 Cats can't afford to get into a shoot out. They've scored over 100 points 4 times - and lost two of them. If Max Gawn could have kicked straight in the last minute in Round 1, they would have lost 4 of their 6 highest scoring games. They need to make the games tight, contested and ugly, because when it gets outside or in to the rear of their zone, they don't get there in numbers to sort things out.