"Nasus is late game"
Yeah, that's a nice thought, until you get to late game, and find out that freezing lane to no tactical effect while your enemy roams all over the map, forcing 4v5s while you calmly afk farm for 30 minutes straight, doesn't really leave you in a place to "carry" lategame. It's a decent thought, until you realize nobody gives a crap about the extra 100 or so dps you've added through a few hundred stacks from that stellar "late-game" tactic, when the other team has - uh, what's it called? Oh right! - LATEGAME CHAMPIONS (you know, the actual ones) that dish out 9 times that amount on every autoattack every half a second.
I'm almost tempted to start dodging every time I see a Nasus player. About 95% of them can't figure out that the outcome of a game doesn't revolve around a purple number on an ability tooltip. I can pretty much start placing bets on guaranteed loss the moment one of them brings up something about "lategame". You mean that stage where your puppy face gets melted before you can get off 2 Q's? Sure, good luck with that. I'm sure that warrants last-hitting minions 20 feet away from an enemy tower for 3-4 minutes straight through two teamfights mid long past the laning phase, and never ever even touching that objective right in your face (yes, that happened. That almost always happens. Just another day in a game with the doggy.)
against AD or
against AP is basically "late game" for Nasus. If you didnt hard counter and kill him 3 times already by that time, you probably wont win top anymore lol.