Yeah, I'm not even comparing PUBG to other games, just describing my experience with it after getting my first win.
If you want a comparative analysis, though, here goes:
I think the reason PUBG wins feel special in a way that few other multiplayer games do is because it's so unlikely for the average player. The percentage of players who win any given game is only 4% in squads, 2% in duos and 1% solo, and the chance of an average player being in those top brackets in terms of skill or knowledge of the game in any match is basically nil.
So nobody gets their first win without a lot of luck. Whether the circle goes your way, or you get really fortunate with loot, or if somehow nobody is looking your way as you crawl through the middle of everyone killing eachother. You feel like you're punching above your weight by getting to the end, and because you die so easy everything is on a knife edge throughout. And importantly, it takes 30 minutes of continually carrying your fragile dude through the match without dying to bag a win. While a loss can be over in 2 minutes and you're done. Losses are many and most are throwaway, while all wins are monumental, and that's why it's getting the platitudes you see. Your first win feels almost like a rite of passage. I think if you asked how many people were having dreams about the game before their first chicken dinner, you'd be surprised at how high the number is.
I'm not saying any of this makes PUBG a better game than any other multiplayer game, shooter or otherwise, I'm just trying to explain why it's not the same as most.