Which cost more, the Sikorsky CH-53E Super Stallion cost per flight hour in 2007 or V-22 total cost of ownership per hour in 2013?
return the  Sikorsky CH-53E Super Stallion ;return the  V-22 ;return cost per  flight hour in  2007 of #1 ;return total cost of ownership per  hour in  2013 of  #2 ;return which is the  highest of #3 ,  #4
['select', 'select', 'project', 'project', 'comparison']