Interesting question. Compare the two in other ways, There are differences. Oliver has th transmission and final drive in a common case, Cockshutt did not. Think about this, the Cockshutt 30 live PTO is driven off of the clutch pressure plate. It was introduced in 1946. The Oliver Super 55 drove the PTO off the pressure plate in 1954. The Oliver 88 Live PTO was splined to the flywheel. About 5 years later The Cockshutt 40 was introduced and the  PTO was splined to the flywheel so to speak.