In my opinion you can´t really just look at the trophys when judging a team. I am far from a Barca fan, but I have to say their team was unbelievable, I have never seen a more dominant side since then. They had Messi, Iniesta and Xavi in their prime not to mention the other great players. The way they played changed football completely overnight in 08/09 and that is something I respect even though it is not my preferred style of play. I don´t think your mentioned Real side would stand a chance against this Barca team.
Yes, they lost two CL´s in this time, but lets be honest in 9 out of 10