Versions of Ghosts for next gen console seem to be fluid and hasty at this point, and I fully expect patches for both versions on their respective launch days. Also, how people see framerate is pretty subjective.
I remember Jeff at Giantbomb saying the frame rate in the Wii U version of BLOPS2 was pretty questionable, then I played it myself and it seemed fine. I'm sure he was right for him personally, but it didn't bother me at all after 3-4 hours of playing.
Jeff also said on this week's Bombcast, IW has had to develop this game for 5 systems as opposed to 2-3, and I think there's a probably a good chance they did spend more time optimizing the 360/XB1 versions because that's what they see as their target audience as opposed to the PC and Playstation platforms.
We're not going to know the real story about either version before 11/15 and 11/22 other than what journalists/bloggers tell people. I trust very few of these people, agendas seem to be the game of choice right now. It'll be interesting and telling after launch who was right and who was just telling a section of people what they wanted to hear.