yup... it's the difference between looking at numbers on a sheet and watching actual tennis
I get what you are trying to say, but the "cold" stats point of view is not to be dismissed. A few months ago two posters were discussing if Thiem would win a MS 1000 this year or not. One said yes, the other said he would barely make a semi. Who do you think they were?
El Dude was the one who posted that Thiem would win, and I was precisely the one who posted that (given his current form), he would barely make a semi. What happened is that I had just watched two matches, the Buenos Aires loss to Schwartzman, and... (well, forgot the other). They were terrible, really hard to watch. A good forehand here and there, and that's it. I was baffled. Even though I heard something about injury, all in all I thought it would be quite hard for the guy to get back to his best level. As it is obvious now, I was completely wrong.
Watching matches, sometimes, it is like looking at a small stripe of a long time series. It can make you miss the bigger picture (as I did). Of course, others could have been wiser in their assessments, but still..
Anyway, I still think that stats tell the wrong story about this guy. My gut feeling is that he will turn the page in other surfaces, and soon enough will be a factor everywhere.