1.) Resolutiongate
If I'm not mistaken, the whole issue with resolutions on next-gen consoles ignited when it was revealed that Call of Duty: Ghosts would be 1080p upscaled from 720p on the Xbox One. Conversely, the game would run on native 1080p on the PS4. Later on, gamers started to compare the resolution difference between other games on both platforms.
Some are understably disappointed since they expect next-gen games to be more powerful than its predecessor to justify spending so much dough. However, others do not notice the difference and find it subtle. I am personally not upset since this is just the transitionary phase and I'm not expecting to kick off until after two years or so.