Interesting little chart..

Personally think the best caliber is the one you have on you when you need it..also feel there is no doubt the 40 and 45 will hit harder..but, also feel the 9mm is now a bit better with the advancement in bullet technology and powders than it once was, however those same bullets are available in 40 and 45 as well...??? Pretty sure if the 9mm was not lethal, the special forces guys would not be using it..

9_40_45One_04-1 by A Hoffart, on Flickr