Like the Xbox One, the PS4 omits one feature that's very important to some gamers: backward compatibility. Unlike Microsoft, Sony at least has plans to use streaming services to make older games, including PS3 games, playable on PS4 in the future.

But that will leave gamers with extensive collections of PS3 discs unable to sell their old consoles without losing the ability to revisit old favorite. What a bummer for those who'd like to put the money from selling a PS3 toward a PS4.