They had a dip in form during the middle of last year and looked good in the finals last year knocking your mob off and giving Geelong a good run too from memory.I'd be willing to bet they run out of puff later in the season.
Similar to Essendon a few years ago, they've had a new fitness guy come in and absolutely smash them in the preseason which has them super fit for the first half of the season and over running most teams, however their young bodies will start to fatigue in the 2nd half of the season.
People getting too excited too early
They are a much better side this year than last.