torque specs for wheels

Is the torque on a Mopar 1/2"-20 any different than a Ford 1/2"-20? (or any other brand for that matter)

It's all about bolt size, threads per inch, lubrication, and bolt quality. If you find a generic chart of fastener torque you'll find that many of the listed torque specs for head bolts, rod bolts, etc, follow pretty close to "any other" fastener of same size thread and hardness

http://raskcycle.com/techtip/webdoc14.html