I believe @Triode User refers to the scenario where Blu2 is used at 0.5Million taps instead of 1M. Many, including Rob Watts, have found that the step from 0.5M to 1M taps is where the M-Scaler magic really happens.
Mojo users are limited to 0.5M by design, while Hugo2 / Qutest users can achieve 1M taps with 2xBNC cables and a cheap adapter. TT2 and DAVE owners can use the dual BNC connectors straight away with 2x BNC cables to enjoy 1M taps.
Hope this helps!
Qutest has dual BNC