Completely disagree, bf 4 has great vehicle to infantry balance imo.
You don't see anyone getting the sort of scores they did in bf 3 with vehicles.
If a vehicle player is raping then that is because of the enemy team, no organisation or tactics to take them out.
Tanks/lavs are perfectly balanced in bf 4, the only vehicle that is balanced spot on tbh.
As for rpgs etc. taking 4+ shots to take a tank out, say what?!

2 "straight" to the back and they are down, don't hit the vehicles from an angle as you do less damage then. Not to mention all the roof faggots that just spam rockets down at you on maps like siege and dawnbreaker makes it a big PITA for tank drivers....... Jets and attack helis can easily take out a tank in one pass by. EDIT: ah you were talking about bf 3 vehicle stuff setter, my bad!
attack helis and little birds are useless on any map with a decent aa driver and then you always have 5+ stinger faggots (as well as the anti air mines) on the edge of the map just trying to take helis down and of course the sraw so no hover camping like in bf 3. Flares and ECM take forever to reload too.
attack jets main cannon is OP, however, they are screwed against any decent stealth pilot or/and aa.
Stealth jets are fine balance wise, although would like to see their manoeuvrability get nerfed a bit so only the proper good pilots can take on attack jets, fed up with noobs raping attack jets with the stealth thinking they are pro pilots.......
aa is more or less fine as well, just those damn activ radar missiles, such a noob weapon and have no respect for anyone who uses them!
Boats are pretty well balanced, got no cover at all on most maps so javelin users can lock onto from 350m (iirc) without worry of getting killed by the boat (unless he is using burst....) plus damn easy to hit with the sraw and jets can easily shred them to pieces in one pass by.