You have a better chance of scoring at least one run with a runner on third and one out than a runner on second with 0 outs. This calculator shows it https://gregstoll.com/~gregstoll/baseball/runsperinning.html just take the complement of 0 runs scored in each situation.
Laley's data shows that your expected outcome is greater by not bunting, but if you are down 1 run in the bottom of the 9th all that matter is 0,1, or 2 runs.
With that said, I believe that you have to look at the players involved. We never all will agree with Tito, but he is the best tribe manager of my lifetime, and I trust his decisions.