Personally, I hate everyone who thinks that's how it should work. Sure, it's solo queue, sometimes you have a bad team and you lose 20-30 lp even though you performed, but did you really perform? If your 30/0 that doesnt matter, you should be maybe 12/0 with the rest of the kills given to your team, if your the only carry, you should carry your team by getting the rest of the team fed.
If you say they can't do that, did you try everything? Did you buy wards, make calls, roam, try a split push? Lead your team? If your the only one performing (and you aren't a toxic player) I can almost guarentee your team will listen to your calls.
And think about all the times you didn't perform score wise, think about if you were playing a mid laner, your score is something like 2/5 by the end of the game, but you zoned their carries hard in teamfights, you made good calls, you led your team, but then you recieve only 10lp even though you might have been the glue that held the team together.
And if you say, well just make the winning normal, that's not fair to the losers? People with 50% winrate, might actually end up being somewhere their League of Legends mechanics aren't.
And yes, League of Legends and Champion Mechanics are two completely different things.
