This came up before and someone posted these were actually more than a M70 at the time. Having owned both I would pick the little BRNO in a heartbeat.
That is because there was high tax in USA on imports from behind the Iron Curtain at that time. Sure, these are nicest mass-produced post WWII rifles out there. Would I sell my old Winchester 70 to buy one of these rifles. No. That is because there is no beating old Model 70 for ruggedness and reliability.
Besides model number I do not know the difference between ZG-47 and Model 21/22.
