fireberd
I figured out why Sonar reports a different number of plugins.
There are several in their own folders that the report does not access. e.g Lexicon LXP Native Reverbs.
I may be wrong without looking myself, but maybe part of the difference is in the ProChannel modules also.
They aren't actually VSTs outside of sonar so the utility may not recognize them like Sonar does ... without looking lol.
Also, you may need to add those additional paths to Sonar to get them to scan properly.
Certain plugins might register through a third-party and work that way, but not register directly in Sonar as expected.