Skill, team play and experience should make the difference, no doubt. It should atleast take a minimum of skill, no ape should be able to win.
But by balancing everything to JUST allow the better team to win the game, never ever letting a just similar skilled team allow to win, i think we 're going to far. Especially when we are talking about symmetrical maps or banning everything that might require a bit less skill to deny less skilled players the win by default.
There are prolly just 3 guys in the world that can win gold on the 100m sprint, i consider this absolutly boring, not fun at all, still i have nothing but respect for the winner.
To win a golf tourney i do not hit the most fairways, greens and have the best putt average. Sometimes i get a lucky break after a bad drive, while my opponent splits the fairway to find his ball in a divot. i don't get this make everythign fair.
I play the game for fun, i do not earn any money while, i do not need to be rewarded with a win just because i think i was on better team. A close loss probable is more exciting than a landslight vicotry, even if the loss was undeserving from my point of view.
Sometimes i lost because of bad luck, but this applies to other team aswell. This does not take away the fun for me. But symmetrical maps do, on those i never ever have to deal with a team using its map advantage, never do i have to overcome the odds. Everything is fair, if i'm just a bit better i will get rewarded with a win, no matter what. Never do i have to adjust to the situation and circumstance, never is there a down side for my actions and decisions. Never would i have to win as HVT, because i just have defend against their HVT later in the game to even out everything again. I just have to mimic the enemy team and will have a draw for sure. Do i need to keep them off a good sniping spot which would allow them to controll the map? Nope, we have such a spot aswell. Do i need to look for a mine? Nope, this would be unfair, since i can not kill him with a mine in this case. The fact he earned it, by having map controll, allowing him to plant it at a spot you have to regain, else you would not have to run there, is unfair? He just needed to defend the area he conquered, this takes no skill, right?
Everyone is equal i guess. Life is fair too?