Is it the quality of pitching has improved over the decades, or that Williams completed the feat before there was integration and the overall standard rose accordingly? If this is the case, then surely the overall standard of hitters should have equally of this level, no?
Noting those that achieved the feat in the 20th century, it is interesting to note that when the 'dead ball' era came to a close and (dare I say it) Ruth started clobbering, which lead to so many others swinging for the fence, that there were fewer that were able to hit at such a clip that is needed to maintain a .400 average?
Is everything, including average, now all secondary to the ability to hit bombs?