If Orton wouldn't consistently throw balls that make his WRs have to make difficult catches they wouldn't drop so many.
You can't keep putting them in that position and not expect them to drop some. How about putting most of them on the numbers with a scattering of balls that need great catches and then we can start calling out the WRs. As it is they make great catches time and time again and yeah, percentages say they're going to drop a few of those ducks.