In the first Producer Letter since release, Dave "SmokeJumper" Georgeson talks about the new Experience system, Here is a snip:
This may seem like a reduction in experience potential, but when in a squad of 10 you rack up kills at a greater rate and with relative ease compared to doing so as an individual, so it's possible to gain a great deal of experience that way. (Plus, squads allow easier communication and allow the sharing of base capture experience, as well as allowing Command functionality, so they're very worthwhile groups.)
Check out the full letter
here.