[istultus]

Well, "win" as a noun is a word from Old English attested before 1150 [1]. And as a word firmly in the language it has its own specific uses in comparison to "victory". It would be silly or pompous to call a win in a sports game a "victory," for example. It would similarly be out of place to call a victory in a battle a win. "Congrats *on the big win" doesn't sound out of place.

[1] https://www.oed.com/dictionary/win_n1?tab=factsheet#14538168

[wink]

"Team A was victorious" doesn't sound out of place to me (ESL) though. Also pretty sure I've seen victory being used in a sense of "destroying the other team" - but I'm not defending its use.