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Dramatic_Hammer
As has been said, using virtual power means comparing numbers with anyone (including others using virtual power) is pointless. Some turbo's are supposed to provide fairly realistic numbers, which is the reason I bought a KK Road Machine, but who knows really?
The only thing it's really useful for is as a metric to track your own progress. Even then, it's reliant on consistency of setup in terms of tyre pressure and force applied to the roller against the tyre.