Does it? Have you tested that out with X number of devices. If enough external HDDs that also are said to be USB 3 and USB 2 compliant are having issues with SP3, doesnt it call for an "unbiased" checking?What hardware issues? The surface line meets the requirements for the usb 3.0 specification. Just because other devices supply more power than the minimum required by the spec does not mean that the surface has hardware issues.
PS: WiFi, BT, My Pen does not PAIR.. (Googled the pen issue and its quite prevalant)