Yes they are. They all receive an electronic impulse signal all in the same way.
Plug in a 220 gauge cluster to your newer Hayabusa and have it read correctly (sans Yellow Box, Speedo-Healer type correction devises).
Plug and play!
All the same, if you want to place 220 gauge faces on your 185 gauges, then all you need to do is re-calculate with a speed type correction box)!