They are by far a very well oiled machine with no significant weakness. They cruised through the league last season with virtually no competition. This year pool is pushing them but i don't think they are playing that well to put pressure on city throughout the course of the season. The team's character is defined by how they deal with pressure scenarios. Few dropped points and you are no longer top of the table. We are yet to witness that as competition is significantly weak compared to last decade.