Mostly agree, but disagree about Spain's performance against defensive teams and that they're not good offensively. Look at some of the teams they've won against in the knockout stage: Portugal, Paraguay, Germany. All of them played defensively, but every time Spain was able to get a goal in within regulation time, and without an in-form Torres.
Also, people keep getting amazed why teams like Portugal and Germany end up playing defensive against Spain. I would argue that it's not really a choice. When going against Spain who can completely dominate the midfield, you're kind of forced to go defensive and play the counter.
Spain only scored once in each of those games, but guess what, it's going to be difficult to score against an opponent who is effectively turtling up at the back with tons of bodies inside the box. All three teams (Portugal/Paraguay/Germany) all had extremely organized defences that are hard to beat even if they're not playing a defensive game.
On Switzerland, I would attribute that to the Spaniards not having really settled into the rhythm, given that it was the first game and all (you can see that they have looked a lot sharper and improved a lot since). I would also argue that if the Swiss tried to play a more offensive game they would probably have lost.
Germany didn't turtle up until spain started to finally press an attack at the 65 minute mark. Up until that point they were pressing every chance they had. Also, Portugal is NOT a defensive team. They are almost as bad as Argentina about pressing for all out attacks. It may seem like a defensive game when Spain sits around in the mid field playing short passes back and forth all game long. This is because the other team can't force an attack when they can't get control of the ball.
Here are the key elements to a true defensive team.
4:4:2 (4 defenders, 4 mids, and 2 forwards)
All defenders stay back. None go up to help the mids or the offense. Despite 4 mids, they rarely have either center mid attack with the forwards. A defending team plays passing games in the back field or long balls to the forwards. A defensive team does not lunge all the time, are content to contain the forward movement of the opposition, and clear the shit out of the ball any chance they get out of bounds. These are the hallmarks of a defensive team. Portugal and Germany are not defensive teams. Do they have good defensive players? Yes, but they do not play defensively as their main tactic. They are both attacking teams. They can switch to turtling up as needed sometimes though.
And Spain as it stands now is not an offensive team. They are content to play it slow, pass the ball around in the mid field, and rely right now on David Villa for scoring. Xavi, Pedro, and Torres all take shots on goal, but their striking ability as it stands is not that good. Even with settled, open net shots, they typically send the ball sailing over or beside the goal. Or they shot right at the goalie or a goal post. They have not been the most accurate at shooting lately. Which is why I said their offense is lacking. They have demonstrated this all throughout the World Cup. Spain has low scoring games not because the teams they are playing are defensive monsters. No, they are low scoring because they can not make a damn shot on goal!! Several times they have the wide open shot with no defenders around, plenty of time to settle the ball where they want to place a shot, and the ball goes wide of the goal. That's a perfect example of a problem with offensive execution. 11 shots at Germany before the half and none of them went in despite some of the shots being very make-able from better strikers shows this.
Look, I have no favorite team and only watch because I am a fan of playing the sport. I just call it like I see it from about 22 years of experience including college ball and semi-pros. I still regularly play but because of torn meniscus, shoulders, Lisfrank fracture repair in the left foot requiring 5 screws, and other injuries I only currently play for recreation.
The Dutch may have much better defensive capabilities than what they've shown through the WC. Spain may have a better offense as well. But I don't follow all these teams all the time. I am only going off their WC games and a few previous ones I managed to watch on occasion that had some of these players.