If you save the HG as an XLSX file, just open the XLS and save as an XLSX with Excel, you can use Doug Finke's Import-Excel function.
How to install and use is described on the Github page.
Then is comes down to just doing
Import-ExcelvSphere_6_0_Hardening_Guide_GA_15_Jun_2015.xlsx|
Select'Configuration Parameter','Desired Value','Default Value','Guideline Id'