It may have been mentioned here already but I think an important part of the retirement equation is that we only get the 5% match if we first put in 5%. So our take home is 5% lower in order to get the match, hence the definition of the word.

However, at the Big Three it looks like 16% is the number they put in and that is regardless of whether one puts in from their own pay or not. That's a big number.