It was @TheFirebird who introduced the discussion of "winning", not me, and who suggested that the players in the games I've posted about are not trying to win. So I was asking what was meant by that.Wouldn't you be the one to answer that question?
I didn't post anything about winning. This is what I posted:
The whole framing around "convincing the GM" is what is odd to me. It suggests a lack of sincerity in engagement with the shared fiction. There also seems to be a lack of attention to the way in which consequences and actions are related. Eg in my 4e D&D game the Dwarf Fighter/Cleric had mediocre social skill bonuses, as is unsurprising for that build of PC. But the player nevertheless declared social actions from time to time, because he found himself in situations where his character wanted to persuade people to his point of view.
Having typed that previous couple of sentences, maybe it's not a lack of attention but rather a sense of choosing the optimal path to the finish line - as opposed to a sense of a character who has things they want to achieve, and so declares actions in pursuit of that, not all of which will involve abilities where the character is strong.