Numbers don't matter.
In wow, once you're max level with max gear, numbers don't matter, how you play does regardless of kill death ratio or assists. This goes for every objective game, not just wow or league. Get on that next level shit.
Explain to me that when I watch competitive League of Legends why the commentators keep a counter for team gold and bring it up in almost every game? Explain to me why they will refer to a players score in game, or the scaling of certain champions and the items the players purchase if numbers don't matter. Professional players and commentators whom understand the game much more deeply than either of us.
I'm sorry man, you're wrong. I'm not trying to be a dick, just honest.
Yes skill matters and is the main determining factor, but the numbers always reflect performance and almost always tell the story of the match. You're out of your mind if you think you played a big role in our victory, you didn't, the only role you played is the fact that 4v5 games *numbers* are nearly impossible to win.
You've gotta come to terms with it. If you get your ass kicked and feed and still won, most likely you were carried. You probably didn't directly influence the victory.
If you got your ass kicked but still made plays happen, good for you too.
Here's a great way to prove my point in league. When the other team is killing baron and you're the only one in position to stop them, what is better, trying to get the easy double on the adc and sp who are low health, or sacrificing yourself to steal the baron kill? Numbers don't matter.
How does that prove your point? Yes making a sacrifice in that situation can be great, post game match history records baron kills too. It can also go terribly bad if you don't consider what level you are and how much damage your smite can do. And killing you will probably give gold to their whole time even though they missed baron. But killing it gives gold and exp to your whole team.
All numbers, all effecting the game.