Assuming the 46 MP 1DsX is full frame, it would have the same 'sensor density' as a 27 MP 1.3x crop factor body (i.e. 1DV), and a 18 MP 1.6x CF body.
A 1DsX with 5 fps at 46 MP and 10 fps at a 1.3x 27 MP 'crop capture' would be totally awesome, dude!