There is a reason why VASL play is slower than face to face play.
Playing with experienced VASL guys, and depending on the size of the scenario or if it is a CG, it is often faster for me. It IS much slower starting off. That said:
Placing counters on map: faster
Cleanup: What clean up. Hit save.
Removing counters especially in a CG: Way faster.
Once you know how to zoom in and out seamlessly: Disadvantaged in seeing the whole board at a glance, but the zooming brings it back.
Actual play: Equal. However, no aging fingers to knock over stacks and "?" counters.
Admin for CG's: Way easier. No HIP records, just hide the stuff on board. You see it, opponent doesn't.
It really depends on how much time you have in with VASL. If you are still learning and have to think before acting in VASL, it can feel like giving birth to an elephant. Once you get the knack, it's easy.