But he didn't. He stayed very active in politics until he achieved the President's House. Cincinnatus didn't do that. He stayed on his damn farm without any goals of ruling the republic after the crisis had abated. Washington's behavior is the exact opposite of that.
There is a difference between a draftee and a politician. Cincinnatus did his duty, went home, and only stirred when galvanized by a desperate Senate. Washington only ever worked for his own political advantage even from the earliest days of the War.
And frankly, I don't think somebody is great just for not becoming a dictator. "Hey, at least he wasn't Napoleon!" isn't a great argument. Again, Cincinnatus did his duty and went home; Washington did his duty and stuck around. And what people also forget is that Washington did not need to launch a coup; he (like everybody else) knew who the first president was gonna be.