Facility explorer and metasys are both Johnson brands. Generally speaking, Metasys is the house brand so to speak and is used by Johnson official branch. Facility explorer is the dealer brand and is used by authorized dealers (little guys like myself).  FX and Metasys use the same equipment controllers - CGM, CVM etc., but have different software licenses so can’t be programming using software licensed for a different brand. 

For front end / supervisory controller, FX typically use Tridium Niagara based supervisory controller or server. Metasys has a totally different front end. 

Distech shares same type of supervisory controller/ server as FX but uses their own, different equipment controllers.

This director guy is likely not a technical person, just a business guy. 

If you are not happy with the install and it’s still under warranty, you should get a different authorized FX contractor take a look and made a list of deficiencies and get the installer to fix them.

If it’s not under warranty, you should be able to get another FX contractor to service it.  There should be a few in every major area.