last gen many games struggled to keep 30FPS with 720p or less. This time round we are launching with lots of 1080p 60FPS games with large advances in other areas. Honestly sub 1080p at 60FPS in what has a good chance of being one of the more technically expressive launch titles isn't too much to worry about. Console optimisation is all about trade-offs (FPS, Image quality, effects, scale, level of detail) of course the PS4 and XBone don't exactly have super high end hardware but the fact that resolution is being traded off in one game isn't a big deal.
@TheVoxelman on twitter