the Masterverb Benchmark was established because it's the reverb that comes with every Scope system today. Any quality reverb will put stress on the PCI bus even with no processing going on as it establishes a communication with the mobo Ram over that bus - the MV was choosen simply as a common denominator unit, so the results are comparable for everyone.
A good PCI throughput is also a solid base for good Asio performance.
The 'test' itself is quite helpful as PC retailers have (usually) absolutely no idea of what's required in theis context - they deal with gamer stuff in the first place.
I had to return a VIA KT133 board myself and they looked at me like an alien as I complained about 'horrible performance...'

... good to have a local reseller, btw
while Scope processing is (unquestionable) excellent, it simply cannot cover all and every flavour of reverb.
Masterverb, the STW 100 series, PT reverbs have a similiar basic sound color, nicely complemented by the DAS RMX160 with a (slightly) brighter (kind of silk-on-silk like) character.
Imho you can't continue the row (on Scope) as the basic Sharc sound would interfere.
I've recently added a native reverby by Arts Acoustic which in fact sounds like the perfect sequel for the row above
I guess you see your outboard gear in a similiar way, not all reverbs are created equal and one size doesn't fit all, contrary to Zappa.
cheers, Tom