I am sorry to say this, but I don't see any "fail" here my friend. The only "fail" thing is that you cracked the screen of your iPad. You can't do that and expect any good out of it..
Right, there's no fail in two replacement iPads being faulty or not replacing a product with something on hand of equivalent price. I've bought lots of Apple products but even I'm not that much of a fan boy to think that's business as usual for Apple.