No, it is not. I ran Orville Redenbachers popcorn business for ConAgra for 6 years, and I know popcorn. The Orville hybrid really was developed by Orville as a hobby. He loved fluffy popcorn, and he developed the hybrid for size of puff and tenderness of puff.
The hybrid is protected, that is, ConAgra controls the seed and contracts with farmers to grow it. It truly is not an open market popcorn. Other popcorn producers cannot buy it on the market.
Try it yourself. Pop up an equal weight of any popcorn and Orville (equal weight!!) and pour the results into equal volume containers. Orville popcorn will have more volume from equal weight. And it will most likely have fewer UPKs (unpopped kernels). The true test of this is a popper or a pan on the stove, as the microwave bag sometimes restricts the corn from popping due to the high volume.
The other popcorns you mention, while they may work fine for you, use open market popcorn. And dats why dey cheaper!