Yeah hitters gave up power back in Spahn's age to make more contact, but these days it has been accepted that it's ok to strike out and be more aggressive because it results in more power numbers. There's no way you can say Spahn wasn't a strikeout pitcher. It does show it's really hard to compare between the 2 ages and that in today's age, you have to preserve your young arms because if you don't, they will probably turn into Mark Prior. Would people with a good sense of the history of the game think that Koufax was abused because he ended his career a bit early. Do you think in today's age if his arm was preserved, he would have had a longer career?