Just my 2 cents about how kill count works:
I logged in and checked my kill count on the site. Then I moved to Akaron and I pvped a bit. Ingame chat said there were 20 kills in that time frame: 12 last hits from me, 7 LH from other players, 1 death from mobs/tower.
After that I went afk for almost 2 hours and when I came back I refreshed the kill count...and voilà, I had 16 kills counted. So no, it's not about the last hit...
It's not so hard to check it either, just do the same thing I did and you'll have your answer...
I logged in and checked my kill count on the site. Then I moved to Akaron and I pvped a bit. Ingame chat said there were 20 kills in that time frame: 12 last hits from me, 7 LH from other players, 1 death from mobs/tower.
After that I went afk for almost 2 hours and when I came back I refreshed the kill count...and voilà, I had 16 kills counted. So no, it's not about the last hit...
It's not so hard to check it either, just do the same thing I did and you'll have your answer...