Lets get inside the head of oracle for a second. They now control ZFS and BTRFS. Why in the hell would they spend a bucketload of money developing BTRFS to be worse then ZFS? They wouldnt. Would you start saving your money to buy an old pentium 2 desktop as a replacement to your current setup? this is unlikely. The thought that oracle wants to waste money in this way is inconceivable.
I dont care what papers you provide, or what links you throw at me because you are really not worth my time. I have found that dispite being only 1 man who needs to eat and sleep, Michael does a damn good job benchmarking. From what i see in the charts, BTRFS kicks ZFS ass in a fucking development stage. If you would like to argue that ZFS keeps your data safer, go ahead, but your competing with a filesystem still in development. If you for one second belive that a development FS is going to be a safer bet than a competed one then you have problems beyond repair. But as i said, it is unlikely oracle is making a 2nd rate FS, especially when they have all the ZFS licencing cards.
kraftman is right, fucking troll.