In regards to mscaler, honestly it wouldn't surprise me. If you look at the actual internals of the mscaler the chassis could likely be about 1/8th the current size.
Rob Watts has stated that for the number of taps and amount of real-time processing the MScaler does, the size of the chassis is fully appropriate due the fan-less design for thermal cooling. The heart of the MScaler (near the underside rear) runs very hot and the chassis acts like a big heatsink.
If a Mojo 2 has a mini MScaler in it, you can bet it will be a lot less taps.