Not exactly. The intake valve closes on the compression stroke about 72 degrees after bottom dead center. The dynamic compression is lower than 9.3-1. A good dynamic compression number is in the 7.5-1 to 8-1 range. If you know all the details you can calculate it using this program:
http://kb-silvolite.com/calc.php?action=comp
The math for comparing cranking compression based on dynamic C/R, from sea level to 1200 feet I have on a spread sheet at the house. If I get a chance I will find it.