No, no, the point being made is the nature of his opponent -- not his opponent's skill, but just the champion itself -- meant that 'thulhu couldn't go about and, y'know, help his team. Because if squiddie did that, the dogman would barrel out of control and murder everything. Which is a fair enough complaint, I suppose.
It really isn't a fair complaint. Obviously Nasus is going to catch up if you leave him alone to farm. ANY champion can do that. Nasus doesn't even scale that quickly. He just has the virtue of being one of (I think) three champions that can scale
indefinitely. Wouldn't it be a stupid game if you left him alone and he NEVER caught up? "Hurr durr I lapped you so many times I can just stand here and you'll never catch up because now you're running backwards!" Who would play a game like that, where if you lose the early game yet are ignored for the rest, you can't EVER catch up? People afk games because they
think this is the case (because they don't know any better). If the point of the game were to just win your lane, the game would've ended itself right there after he won lane. You say it's "not his opponent's skill" but it doesn't take any skill to free farm when you've been left alone. It doesn't matter which champion you're on. This is what you sacrifice when you leave your lane to help other lanes. And the simple fact is he lost because his team was losing everywhere else, not because Nasus is overpowered by not being erased from the game after losing his lane. The question is, what can you do with that lane victory? And the answer in this case is, he wasn't able to do anything, because his team was losing on every other front. This is in no way his fault, but it's a team game, and there are some games you just can't win. And that's the point I was trying to make. If your whole team is losing except you, your team is SUPPOSED to lose (assuming everything else, e.g. power curves, being equal) by design. No one player is supposed to be able to entirely carry the entire game. If he is able to do that, it's not only a failure of matchmaking, it's a failure of game design. No one player should be able to pick up the slack for FOUR other players, that's just stupid. The Nasus was just lucky that he had FOUR players to pick up his slack while Cthulhu's team only had him to pick up theirs.
Here's some advice for anyone who finds themselves in such a situation. You've picked a hard counter to your lane opponent but your other lanes are losing. You're strong enough to solo kill your opponent. Don't leave. Stay there. Play proactively, not reactively. Don't go to the fed enemy, force them to come to you. If you're constantly killing your lane opponent, preventing him from farming either through zoning or death, and busting down all his towers, eventually people will come for you, either for the juicy bounty, or to stop you from demolishing their base. Often the better way to relieve pressure from the map is to divert it away from your team, which is weak, to yourself, which is hopefully strong enough, rather than try to meet it head on. It wouldn't have necessarily worked in his case, because again, one person is not supposed to be able to carry an entire team - they must still be competent enough to support their fed member, or take advantage of the diversions he causes. But if 3 or 4 people come for you and you're able to elude them, wasting their time, that's easily a tower taken, or a dragon, or maybe even a baron - if they have the skill and awareness to seize that opportunity.