I'm trying to figure out what numbers to put into the compression ratio calculator?

I have a set of: Mopar Performance Steel Shim Head Gasket Sets P4286754 -link

The part number on the actual head gasket is #3614824

The advertised compressed thickness is 0.020"

I mic'd them at 0.015"

My question is, will the embossing give the gasket a compressed thickness closer to 0.020"? Or will the compressed thickness be closer to what I actually measured; 0.015"?