It's skill when I pull off a cool 200-IQ play out of nowhere.
Obviously, it's just RnG bald-faced luck when my opponent does it. :-)
LOL 200 IQ gets used way too much for this game IMO. Yes there is skill involved, but finding the simple math equation to clear a board is not even close to even 140 IQ! As a guy who used to play tournament level chess, the amount of comparable skill between the games is not even close, yet, in the chess community, we dont say "wow, that was a 200 IQ move you just made" very often, or at all.
So, why is this phrase used so much in HS? Do players really feel that playing a game where 4 beats 3, and 3 beats 2 is that complicated and warrant such a saying? Or is more copy pasta going on, where he said it, so I say it too?
Your discussion about Grit really is appropriate, and is a totally different skill than pure intellect! The Grit you talk about is what is needed to climb the ladder with home brew decks especially because most others are using top tier decks. I admit to crumbling into a salty guy, when i get on a losing streak, and having more Grit helps alot for sure.
I think the dumbing down of western society is prob one of the reasons why the 200 IQ saying gets used in regards to simple HS plays. Kids today, generally, just arent as intelligent, as kids who grew up 60 years ago, playing Chess.
Making conclusions about the (maybe not even existent) dumbing down of western society because of HS is a bold 200-IQ move dude.
Maybe this helps you understand in what situations this saying is generally used.