V-22 Osprey vs large Helicopters

A few numbers:
Chinook CH-47
Cost                   $38 million
Combat Radius 200 miles
Cruise Speed     160 knots
Payload             24,000 lbs

Super Stallion CH53
Cost                  $24 million
Combat Radius 621 miles
Cruise Speed     150 knots
Payload              30,000 lbs

Osprey V-22
Cost                   $72.1 million
Combat Radius  426 miles
Cruise Speed     275 knots
Payload              20,000 lbs

The Marine Corps loves the V-22.  Not sure why.  All the V-22 offers over the CH53 is much higher cruise speed.  The CH-53 has better combat radius and payload.  We could buy three CH-53 helicopters for the price of a single V-22.