The way this guy described it to me was as if it were like a powdercoat of sorts that gets baked on, not really just an application like a coat of paint. Teflon tends to fill nooks and crannies rather than just form a superficial layer. I suppose it depends on the application technique.
BC, can you expand on the "parkerizing"? Where did you get it done?
I found this link which seemed to have decent info: http://www.calvan.com/html/what_is_parkerizing.html
Thanks.