We were better than them for over 1/2 of the match.
Further, you must not have been watching too hard because their distribution from the back was woeful and when we actually pressed them, they made constant mistakes.
If my post seemed overly negative, that was not the intention. I can break it down a bit.
What I saw was that Messi decided the match with a fantastic run, first touch and pass to Suarez, that i don't think our attackers are capable of. And while our CBs were very good last night, I think Pique was immense, and the best player on the pitch. He seemed to have Smalling's athleticism as well as Lindelöf's calmness and ability on the ball combined.
While we pressed them very well, we didn't create much from it, mostly down to Young, who missed a lot of crosses, had poor passing, and generally lost the ball a lot.
So what I saw was us pressing them very well, playing a very even match in midfield. I saw our defenders dealing with them very well, but conceding due to a fantastic induvidual performance. But I also saw us struggling to create chances, both due to a very weak attacking performance from Young, but also because we don't have a well worked attacking system. And so Pique, espescially, dealt with most of our attacks.