The slower you pedal, the slower you move faster...Do we know the range of z10 and z19? From what I gather their MTOW are different in like 2 tons. Without armor, gun turret and its ammunition and consume less fuel being a lighter design, the two may have similar operation range. If a z-19 with MMW radar can reach beachhead with reasonable fuel I would say it can potentially offer more support than a z-10 could with his still impressive armament and good sensor.