For most of this game and indeed a lot of the time I watch Inter, there's just a distinct lack of movement, speed and cohesion apart from the odd game, or the odd move here and there. Regardless of whether that's symptomatic of Italian football generally, that's a bit worrying for a team who are supposed to be one of the best in the league. Still, as you say, Leo's not had much time there at all.
It also helps when there are players of Sneijder's quality who can stick in a free kick to win a game.