Q: estimate when apple will ship pre-order iphone 6 plus oredered sept. 12@ 4:30 am.

just wondering when apple will ship my iphone 6 plus 128 gb gold. i place the order online sept. 12 @ 4:20 AM. my estimated delivery date i 3-4 weeks, oct 12-20. just wonder why some phone orders made after me have much earlier shipping dates?