Dortmund has really a depth problem, they have like 14 good players most that are in the starting line up and the rest are nothing and youngsters...
Yes, but you also can not prepare for the eventuality of losing you entire back four(imagine what would have happend to us in 2010-2011 if Dani, Puyol, Pique and Abi would have been all injured at the same time; we would have probably needed to play like in last year's El Clasico, with Montoya-Mascherano-Adriano-Jordi Alba). That was just bad luck. Also the fact that they are probably the team from CL who runs the most doesn't help.
Pep? He said that ages ago. Just explained it recently. The original interview is from before Pep was appointed.
The tennis part is before Borussia's game against Arsenal, so Pep was Bayern's coach at the time. Last year when he played against Real Madrid he said in El Pais that Barca was an inspiration to him, that he liked how hard our players worked or how they celebrated every goal..so it was a little strange to see him say this:
"If Barcelona's team of the last four years were the first one that I saw play when I was four years of age ... with their serenity, winning 5-0, 6-0 … I would have played tennis. Sorry, that is not enough for me. What I love is that there are some things you can do in football to allow each team to win most of the matches.
"It is not serenity football, it is fighting football – that is what I like. What we call in German – English [football] … rainy day, heavy pitch, everybody is dirty in the face and they go home and can't play football for the next four weeks. This is Borussia."
So either he says in interviews what the people from that country want to hear or last year he wanted to get under Mou's skin and this year it was Pep's turn. Either way you can see why some people didn't liked what he said.