When I look at the bottom of my stats in Battlefield 3 in the battlelog, under "All time statistics" there are "Highest Kill Streak" and "Kill Streak Bonus" listed with the same number, 20 in my case. I've checked countless other profiles and I didn't find a single one where the numbers were different.
So, do they actually mean the same thing and they screwed it up somehow?
Or is the difference so subtle that people having different numbers are rare?