Your list from awesome to great to good is completely backwards. Actually you could swap the second season of Hannibal with True Detective and it'll still be completely backwards.
What truly made the Americans awesome, for me, was the conclusion to the second season. There are so few shows out there that can actually deliver a good payoff to a build-up and that finale was one of the best I've seen in recent memory. It wrapped up the season neatly and made me want to see more. Thus, awesome.
As for Hannibal
True Detective though, I liked but didn't love. Good acting, good atmosphere, good characters but to me that story was just your kinda standard really. Still, I'm on board for next season.
So, no, I stand by my opinion and question your science!