No, not that. That is the original fan I took out of my 'Bird that everyone says couldn't have come stock in it. The big one came from a Mark VIII and I put in it (the plug was the same so I just plugged it in). I noticed it ran high speed all the time - I now know why after reading here. Anyways, it burned up from running high all the time and I replaced it with a good motor from another fan, not the small one in the picture.
Anyways, they were mounted different on the shaft, so I "backwoods" engineered it to work. Now it runs quiet again and properly, so no worries.
But after looking at that pic, yes, that looks like the same situation I did. You can't tell from the pics, but the way the blade mounts on those shafts are DIFFERENT (there is a flat side on one of them, but the other has a little pin in it).