Funny how everyone is ignoring the confirmed fact that PS4 requires always-online for any backwards compatibility and all gaikai features, but cling to the unconfirmed rumors that the next XBOX will require a connection. Nobody even seems ****ed that none of their PSN purchases will transfer to PS4.
No one is ignoring it. After hearing about what kind of processors were being used for both the Durango and PS4, many stopped concerning themselves with backwards compatibility as the last thing we want is a higher cost associated with having some hardware built in just for emulation of older games; or worse, having less features or power within the device in attempt to bring a whole package at a $299 or $399 price tag.
That said, we can't accurately speculate at this time because there are rumors from Paul Thurrott saying there's a device (sold separately) to attach to allow for this backwards compatibility, and the newer leaks which suggest a chip built in. Only time will tell I think in determining what is and isn't true.
Personally, I'd rather the consoles be more powerful, if only to give the devices better longevity so that PC gamers don't have to feel like the consoles are holding them back due to strict limitations. I think this generation will bring both sides even closer together, thankfully. Looking forward to seeing how it all plays out.