Actually he didn't. What you're trying to do is say that because something is labeled as something, it absolutely must be that.... which is just plain stupid, and takes someone either intentionally ignorant, or intentionally deceitful, to repeat. Perhaps you simply need to buy a dictionary, or better an encyclopedia and do a little reading.
The USSR was hard left communist, which is an offshoot, and has some of the characteristics, of socialism. In it's origins, it may have held those socialist promises, but being ruled by a sociopathic dictator can screw up pretty much anything.
The NAZI's, on the other hand, were a hard right, nationalistic fascists. Again, being ruled by a sociopathic dictator is definitely a minus.
But more to the point, you conflate the activities of POLITICAL ideologies with ECONOMIC ideologies to arrive at really stupid fucking talking points.