Competition?, page-28

A rough but not completely inaccurate estimate;
Mossie Drone:
4 blades to lift 225g (for a drone the thrust should be as a safe guard at least 2 times the weight of the drone) so say 2x225/4 = ~112.5g thrust each

Roam-e:
2 blades to lift 700g
2x700/2 = ~700g thrust each

For props with Pitch/Diameter ratios less than 0.6 the formula for static thrust is
thrust = P.D^3.RPM^2.10^-10 oz
Assuming P (pitch) is same for both drones blades, diameter of roam-e blades(12") is say 3xMossie(4") diameter and using the thrusts estimated above doing a ratio of the RPMs of the 2 drones (roam-e to mossie) the ratio comes out to just under 0.5 ie the mossie drone blades will rotate twice as fast as the Roam-e's which would indicate a likely higher frequency.

of course these are very rough back envelope calc but that's what it comes out to