Guess Sonar compensates latency VST report and not measures actual latency.
If you have a track with say a channel strip switched on, like PX64 Percussion Strip....Sonar might compensate latency even though there might be no/less latency when non of the modules (eq, dynamics) are activated.
I don't know if this is the case, just thinking it could be on some plugins/effects.
Other situation might be a plugin has on/off automation on functions inside the plugin that change the latency, not sure if Sonar would be able to compensate
Or if you have a track with 3 clips, of which just 1 has a latency effect....can Sonar calculate that ?
I don't know if other DAW's or fe SSL or NEVE consoles have this, but maybe a feature to record ACTUAL latency then compensate when exporting might be interesting.
Not that it's not ok now, but just thinking about it..