The 23 is a huge knife, about 4 1/2" closed. The 73 is about 3 3/4" closed with a 3 1/16" blade. The 23 is about the size of a Buck 110 and heavy.
The #23 is a big knife, but I don't consider it huge. Here it is next to a 110. It's smaller, thinner, and weighs less because it doesn't have brass bolsters.
It's about the same size and weight as my Benchmade Grip that I EDC.
In fit and finnish, the GEC out classes them all