Is OSB considered equal as a subfloor to plywood?

MFMA recommends the following for subfloors involving OSB or plywood: 

Subfloor shall be 15/32” x 4’ x 8’, minimum 4 ply, APA (or flooring manufacturers approved rated equivalent) Rated Sheathing, Exposure 1, or per MFMA flooring manufacturer design.
Disclaimer: The MFMA provides general information to architects, specifiers and consumers. The MFMA, its members, officers and agents disclaim any responsibility whatsoever for the accuracy or applicability of these guidelines under all circumstances and conditions.
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