I'm not trying to say it reflects poorly (though my own personal choice would be like yours), I'm just comparing the two of them. Competitions won seems to be a moot point so that leaves social game and the plans they each came up with.
I don't think Tyler's social game was awful - there's a reason they all gravitated to him - but being the strategic one has meant that he's the one they're side-eyeing now. It's easier for Kaycee to be the stronger of the two socially because she wasn't putting herself out there strategically. I think Kaycee's a doll and I'd 100% be friends with her. Everyone should totally love her because she gave them zero reason not to. But it's also easier for her to come out smelling like roses socially because Tyler was the more strategic one.
Playing the way Tyler has is a double-edged sword in the social department. A big part of the reason his strategies were successful was his social game. If they didn't like him, they wouldn't have trusted him, listened to him, or wanted to work with him. That's why he's being a little side-eyed now. And I understand it, don't get me wrong, but it's not like he's Paul; he was never actually cruel or unnecessarily personal with anyone. He just played the game.
In comparison to Kaycee, yeah, that makes him falter a little. But in that same comparison, maybe she falters a little in the strategy department.
Social game is insanely important, but I don't think Tyler being stronger in a strategic sense should be discounted, either. Especially because it's not as though he was some sort of horror socially.