All timer. MVP
I might be a homer, but for me I just don't see how you give Betts the MVP over Acuna. The argument for Betts is that he's "arguably" been "slightly" better because of his defensive value, and even in that example its extremely close.
You can just as easily argue Acuna has been slightly better statistically without getting into expected stats. I'm not one for narratives coming into play. But if its as close as its been, then at that point I don't see how you don't take into account that 1.) he is having a historic never been done before season, 2.) his counting stats are just better basically across the board, 3.) best player on best team, 4.) all of his more super-advanced metrics truly just show his level of hitting metrics frankly blows away Betts - and everybody! - no one gives MVP based off expected stats, but if the base line stats are basically equal, then it doesn't hurt to at least be aware that he simply hits the ball harder and better than anyone in the game and its not close, 5.) when its as close as it is, I don't think its unreasonable to just consider that Acuna is simply doing things no one else in the game can do all around - Baseball is a game of history. Ronald is making history. 40-70 just matters - in the history of the game, 40-70 just matters.
I'd also add that sports are about competition. You don't settle things based off small sample sizes, but in the most raw, competitive juice form, there is at least something to be said that Acuna was the runaway MVP, Betts went bonkers and for a few weeks the media narrative was Betts had "stolen it" - they then go ahead to ahead in a critical series with HF on the line, and Braves take 3 of 4, with Acuna just showing out and then just seizing it back in September. Everyone in the baseball world knew they were both gunning for MVP in September and Acuna busted out another gear. Not quite the same, but shades of Chipper in 1999. Again, you don't decide MVP's on that if Betts was just better, but when its this close, things like that matter. That is just the nature of sports, its not always just decided on the excel sheet.
Lastly consistency matters. Acuna hasn't been a tale of all or nothing. He's gone over a 900 ops every month of the season. Betts has a 760 ops in September, and 767 in April. I know that means at his best, he's also been beyond absurd, but being elite every game of the season to me is not insignificant.
Again - everything I just spoke about I would 100% write-off if Betts had simply been better. But even if you fall in the camp of thinking Betts has been better, its so razor thin, that with everything else going for Acuna, I just don't know how you don't vote for Acuna. Historic season that will live in the record books.