I think most people in our field, including Gruber, are well aware that MS doesn't have full control of the stack. It's good to note, but at the end of the day if you're just judging product A from product B; no one, especially the customer, gives a crap about excuses no matter how good they are. Unless you're my family or friend, you either deliver or you don't. I don't care if you have to let the dog eat your homework or not.