Possibly a bit harsh, but he really hasn't impressed me in the past, thinking logically there is no reason that he has that drive other then the sponsorship money that he brings.
Now we all know that no driver makes it to Grand Prix racing without A alot of money or B alot of sacrifice, generally both, but there comes a point where if no one is willing to pay you to drive, you just aren't good enough.
I honestly don't rate Grosjean, but fairs fair he had very limited experience when he drove in F1 so it will be interesting to see how he goes when hes fully up to speed.
On another note, I think I might splash some cash on Webber, he's due and looks to be in fine form.