I'm not writing on this board very often (as you can see), but let me just say one thing: WAIT until tomorrow, when AEG releases the final and full information about the ticket refund!
They say that "in lieu of the FULL refund", you have the option to get the ticket. Now, you can read into that whatever you want, but from a logical standpoint (at least the one I have), that means nothing else than: "your refund will get smaller (=no FULL refund), but you will receive a good portion of your mony, even IF you decide to get the ticket".
Otherwise, they would have written something along the lines "in lieu of A refund". The word "full" makes the important difference here.
Apart from that, it would be totally ridiculous to keep 100% of the ticket price if you decide to have them sent to you, simply because the tickets where priced differently. Even AEG would not dare charing different prices for a piece of paper...
But just as you, I am as uncertain about that. So keep cool, and wait what will be announced tomorrow.
A piece of cardboard is nothing to become so upset about, anyway