You're basing this on the experience of a very small number of people on the first day of use. My experience (noted above) isn't in line with what others have experienced - maybe my charging cycle was better, maybe I'm simply being less sensationalist, maybe it's just luck. But don't go all tabloid and acting like you're going to throw yourself off a bridge over battery life just yet.
No, I am slightly miffed that I have just entered a new contract and I am worried that it isn't doing what it said. I am now updating to the latest software and I hope this may help. Also i will give it a few charge cycles to see if it gets better. Fingers crossed.