Negative? Are you kidding me? Barcelona knocked the ball around and did nothing. Chelsea had the most clinical chances tonight (and the best chance a week ago) and had 2 clear scoring chances blocked by handballs in the box.
Your comments here actually make me question whether you watched the game at all, or whether you talk rubbish to elicit a response. You're probably one of these people who go on and on about Barcelona being this and that, or perhaps the same for Arsenal and their pass, pass, pass, do nothing style which Barcelona did over two legs. In both games Barcelona only had Iniesta working in the middle, Xavi, Eto'o and Messi were bystanders, flashing wasted balls and hollywood shots over the bar.
But hey-ho, Chelsea's 'negative style' of getting the ball forward by breaking, working the keeper and creating cances obviously paled compared to the totally 'positive style' of Barcelona failing to get shot after shot on goal. Again.
Or, perhaps, it's just possible that Barcelona really aren't all that and actually DO play in a weak league where it's easy to score.
As a side note, two great goals tonight.