I find Battlefield 4 to have superior infantry vs infantry play, but compared to BF2, BF4 ground vehicles are too durable, both in infantry against tanks and tanks vs tanks. Air vehicles are a mixed bag; it can be as bad as the air to ground was in BF2, but it takes a little more skill overall than it did in BF2. On the other hand, superficially, with stingers, it feels like infantry can do more against air than they could in BF2 where there were only a few suicide chairs per map, but it's actually an illusion because ECM/flares/whatever are so powerful and have a fast re-use timer that you don't really have an impact. Only if multiple people overwhelm their air with them, and unfortunately that doesn't happen that much. I didn't download the beta yet so I'm just saying what BF4 feels like -