Never seen a test between the two (nor any interest in doing such) as you normally pick the OS based on your application requirements not based on stripe performance. You have much more control over the linux one (you don't under the default windows) but you could also use VxFS (veritas clustering file system) which can be used on many platforms (basically does the same thing as your file system (replaces ntfs) and volume management (like lvm or dynamic discs).