Should have figured you'd be someone who thinks kda is all that matters...
Instead, you could look at the detailed match history. Have up first blood to a gank, so yes clearly not a good game but still exactly as I described. Care to notice that 6 of the 12 deaths came after 20 minutes, that 9 of the 12 came after 10 minutes and were from champions other than my Lane opponents (I.e. I was dying to their fed adc in teamfights at drag, in my Lane, etc...).
It's exactly what I said, when I play bad, I am carry-able. If my other lanes were playing well, such as the game I described where I was up 5 kills bot Lane at 8 minutes, they could handle a 1/3/1 mid laner at 10 minutes. The difference is when your other lanes are losing, you can't sit back and just try to save your kda, you need to try to change something. Their adc was fed, every teamfight was basically me trying to dive their adc and failing - again, carry-able if a teammate were able to.
And I've had bad Games, terrible kda Games, but again, if no one on the team looks able to carry the philosophy of just trying not to feed doesn't work.
W.r.t. Hecarim... He's my jungler. A jungler doesn't feed a Lane. In the new jungle, which is as far as you've looked, a jungler is super dependent on teammates. My hecarim Games have been:
First gank, get an assist.
Second gank, get an assist
first Lane you ganked dies in Lane
second Lane you ganked dies in Lane
other Lane dies in Lane.
Everyone calling for gank
you gank, team doesn't follow, you die
Teamfights: hecarim, initiate. No one follows damage for aoe heal, thus no tankiness = dead.
Too team dependent.
