Here we go.. a few more updated charts:
First, time distribution between the different game(scoring) modes for the (LW) MA (except, as always, from III/2006 to III/2007, as EW & MW was included in the LW arena data during that time)
Missing is the time spent in manned guns, no data available on that
As you can see, it's still not "AH's now just GV everywhere"
This is how the various kind of kills are distributed (Air to Air, Air to Ground, Ground to Ground, Ground to air):
For interpretation of this, the context is important. When the share of the G2G kills (=tanks shooting each other) suddenly rose it did not mean that suddenly about everybody jumped to tanks (as you can clearly see by the first chart). At that time the GV control system was fundamentally revamped, allowing for a much faster pace in GV combat than before.
And finally the k/h for the different scoring modes: