All pockets are not created equal. Pocket size and overall fit of your pants (tight fit or loose fit) all play a roll in pocket carry.
Bottom line though, thinner guns work better and shorter guns work better for pocket carry. It is also very subjective. I don't even like carrying car keys in my pocket so I'm pretty hard on pocket carry. The only gun I truely consider a pocket gun is a Ruger LCP and similar type guns.
The best way is to fit a gun you like a simply put it in your pocket. Does it ride well? Is it concealed? Can you draw it quickly?
"He who laughs last, laughs dead." Homer Simpson