And Ruth isn't a good comp because while he was a great hitter as an older, heavier man, I wouldn't say that version of Ruth was that amazing an athlete. It was the younger Ruth who also pitched and could steal bases.
At Willems' age Ruth did not have a similar body type.
Someone like Kirk would have been a much better choice. But no, we have to go for the HoF player, even if it isn't actually a good comp.