s219
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The only reason you even see OSB is because it's cheaper and easier to work worth. Quality plywood is stronger in every way than OSB. Emphasis on quality. The multiple layers of crossing grains make it very strong in shear and compression.
Those notions are about 15-20 years behind the times. OSB has an even more isotropic distribution of crossing grains than plywood. Money has nothing to do with it -- many of the engineered lumber products are better because of the OSB construction.
There are cases where plywood is better, and cases where OSB is better. There is not a general conclusion to be made. You need to look at it on a product by product basis.