Heidfeld: Lewis has yet to learn his lesson
Racechick: Heidfeld has yet to learn to qualify

Take his qualifying results from a year that he had a car that suited his style and you'll see that he's more than capable. He even managed to qualify on the front row last year, despite being in a car that was further away from the McLaren and Ferrari than this year's car was. This year's BMW Sauber is completely unsuited to his driving style, so of course he's going to struggle!
I honestly see your retort here as childish. Heidfeld's comments are completely valid. Last year, Lewis through the championship away by trying to win in Brazil when he could have just followed Alonso home. All he had to do was finish third in this race and he would have been fine. He lost his head and tried to get in front when it wasn't necessary. I'm sorry, but this time it isn't unfair criticism of 'your guy'. It's just a guy with a valid comment telling it how it is. Of course, nobody's opinion is allowed to be valid when they're not saying nice things about Lewis, regardless of whether or not they're true...

Nick beat Mark Webber, a brilliant qualifier to pole at the Nurburgring in 2005, so he most definitely can qualify. He could also win a championship if the car allows him to. If BMW get the car right next year, then both Nick and Robert could win the title.
Even with bad qualifying performances this year, Nick has still followed Robert home closely on a few occasions this year despite being several grid places behind him.