If it was this simple and all black and white...
Mourinho's Inter had a machine-like defense and yet we had killer counter-attacks. One without the other wouldn't work and those examples you give aren't applicable to modern football this much. A solid defense is a great thing to have but in reality if the opponent can't smell the ball with the tiki-taka or you have a monstrous attack as Bayern have, even Juves midfield dynamism are much more important than having the best defense around. Simply because relying on the defense is a gamble in which the bad outcome means you conceded and that doesn't get you closer to winning games.
Actually we relied much on the defense previous seasons and it worked quite good in the beginning of this season, for example, Milan on the other hand bet on the attack and we all know how this ended. Provided both midfields are so-so, I'm not in a mood to make player-by-player comparisons.
The golden rule - offense is the best defense is still true.
Sure, I agree, we had killer counter attacks, but our defense was the crux still. We conceeded 34 goals that season - less than one a match - and scored 75. Milan the year after conceeded 24, but scored 65 (less than Inter, who came 2nd. Same as Udinese, who came 4th, but conceded 43 instead of 24). In 2012 Juventus scored 6 less than Milan, but conceded 13 less to win by 4 points. Even last year, Juventus (71) scored less than Napoli (73) and Fiorentina (72) and equal to Roma (71), but it was the defense where they win (24 vs 36, 44, and 45 respectively)
A good team has always been built in the back.
Bayern this year conceded 18 goals..
Champions are defined by goals conceded, not goals scored.
The only except I can find to that recently is last year in the Bundesliga with Bayern conceding less than Dortmund, and Atleticdo this season with 31
Of course you dont win games without scoring - never saying that hasnt been true - but in defense you have to be lucky EVERY time. In attack you only have to be lucky a few times.
I'm, again, not talking about individual players in defense, but actually the crux to a good defense is a good DMC. We don't really appreciate this because we had Cambiasso - who is one of the most intelligent readers of the game in that position - for a very long time. Now he starts to be not so good, we start to concede by the bucket.
Like I said, Makelele @ Real is a perfect example of that, too.
http://www.thefalse9.com/2011/06/makelele-role.html
“We will not miss Makelele. His technique is average, he lacks the speed and skill to take the ball past opponents, and ninety percent of his distribution either goes backwards or sideways. He wasn’t a header of the ball and he rarely passed the ball more than three metres.”
From Perez
“Why put another layer of gold paint on the Bentley when you are losing the entire engine?”
From Zidane.
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what he actually does, as well, is he complements the attacking side. They dont have to come back as much because they know they can trust the 5 defenders to take care of problems. that is why great teams train to defend with 4 players - you use the DMC to break up play, and if they get past him, you can defend the last few with 4. You dont need to defend with 8 or 9 (like we do), because you're a well drilled unit, and not constantly under pressure.
This is why Gargano was actually very close to what we needed. But his inability to pass the ball more than 2 yards with any consistency killed us, because theres no point having a great DMC who can break up play just to pass the ball back to the opposition.