Cough, cough, Jonathan can send me a nice big AVR and I'd be happy to pit it against a really nice antique OEC in a photo shoot smackdown
Seriously, though, comparing an AVC to an antique stone is apples to oranges. Every antique diamond is different - no two are alike and each will perform differently. On the contrary, AVR's are uniform, they all look and act similarly. They are both beautiful and will appeal to different people - it's just a matter of finding what speaks to you.
Grace and I can look at a tray of OEC's and we'll almost never both choose the same stones as our favorites. That's one of the wonderful things about true old cuts - each diamond is completely unique. Some are quirky and wonky and adorable (like me!), others are symmetrical and more "mainstream" in their appearance - there's something for everyone and the stones in circulation now are all that ever will be.
In fact, less as time goes on because there are dealers who are routinely buying old cuts for purposes of recutting them. If given the opportunity, I'd choose an old cut every time (obviously, lol) because these beautiful little pieces of history are rare and amazing and deserve to be preserved. But, of course, it's a very personal choice. For others, the emphasis is on technology and performance and "perfection" in the numbers - I think newly cut stones like AVR's appeal most to those who would otherwise buy a modern RB, but want something different. Those who love antiques, however, are usual pretty loyal to the oldies.