From what I saw on TV, if I was a juror Kenzie won my vote. She won by navigating out of her initial tribe, by working to keep her tribe the post merge swing vote early rather than the easy vote. She overcame the other tribes pre merge being told that she was running things. With one exception, an exception that should and probably did help her she was in on the vote. Being in the alliances that controlled the game. She impressively dealt with Ben voting for her. While everyone else was beat down one way or another by the conditions such that that many leaned on her heavily to survive, she seemed to thrive.
She seemed to thrive right up to fire making challenge where the moment seemed too big for her at first, until she gathered herself and won it. I wasn't a fan of the help from Liz, but I thought then and now that reflected more on Maria than Kenzie. (Just not sure whether it reflected respect or disrespect.) While some of her game was under the radar, being "carried to the end", etc., the "out wit" part should include using all of the tools available and not just the "resume building" big moves. Off the chart social game, strategically always in the right place, thrived despite the conditions, won challenges.
Some of this applied to Charlie also, and he probably had had a larger "mastermind" role with Maria, but he crumbled at the end. The "my goal was final three" was bad, but his attempt to correct was worse. If it was ultimately his idea to create the goat alliance with Kenzie, Ben, and Liz that ruled the end game, then I think he made a fatal mistake picking Kenzie over just about any of the other options.