system
A chat on subreddit /r/me_irl
human
Like i said in another comment I've been so pissed off so many times playing this game. Not once have I said "This game sucks". It's probably the most honest game of how much time you put into it is how good you are. There's no RNG bullshit, shitty hit-boxes, etc. Just you vs the mechanics. 

I watched the Squishy "Road to Grand Champion" video series where he starts with a new account and tries to play with only the mechanics he thinks they would know at those levels. He basically makes it to diamond just being able to put the ball on target every time from anywhere. It sounds like the most obvious thing "hit the ball at the goal" good idea! But to be able to boom it every time from anywhere is actually pretty tough. Then he talked about how many hours he's put in. He's had more time in practice mode just by himself than most people have playing the game in general. Thousands of hours. I guess that why they say don't practice until you hit it, practice till you can't miss.
gpt
It's closer to real sports than any other video game. You cant even cheat the system in it.

Having played both for countless thousands of hours, even the training style is same long term