*sigh*
This is STILL not confirmation of anything. For Pete's sake, the OP even mentions he's buying AC+ in case he drops his phone on the floor "AGAIN".
If all of you smart people haven't figured it out by now, Apple is a fantastic company when it comes to customer service. They aren't going to call someone a liar unless they have hard evidence, and until the phone is shipped back of COURSE they aren't going to accuse the caller of anything.
Did they charge you full retail price for the replacement until the original could be evaluated (as is policy with express replacement)? If they just sent you one willy nilly, without any other backup in case it's clearly obvious you *cough* dropped your phone on the floor, then I would be shocked.
They charge you for the replacement, then release the charge AFTER they determine it wasn't your fault.
They don't make the determination without seeing the phone first. That'd be silly. You can always send it back FIRST, but if you want an express replacement, that's how it's always worked (you know... to prevent fraud from people who drop their phones on the floor and then swear it was like that out of the box...).
On a related note, no bends here. No friends with bends either. There is no bendgate, just people abusing their phones and bandwagoning trying to get their mistake covered for free. Sorry