The ESX information you're after can't be obtained directly with the VITK.

The alternative is to set up a session with plink to the COS and get the information from there (provided it is available).
Some examples can be found in Copy files (vmx) , how to script it ??, Retrieve VMX and Scipt to update ESX local file (esx.conf) on all hosts.
But note that the use of plink requires you to set up sudo on the COS.

Coming back to your question, if you can get the information at the console, you can get it with PowerShell via the use of the plink utility.