I really do feel the same the more I play this game the more I am starting to dislike it.
For me its better than Black ops 2 connection wise but no much improvement over all , the hit detection boxes are massive so when some noob is spraying above or outside of your character he seems to be getting hits on you.
Many time I have been behind cover and on the killcam hitmarkers are showing up on there screen its like on my screen I barely went red and I died lol