"The one shigeo makes is tastier".
Probably true. Some convenience store / market hamburg steaks are really mediocre. The ones they serve at actual restaurants are better, and the ones you can make at home following a recipe can also be better if you follow a good recipe and are a skilled enough cook.
It's honestly not that hard to make hamburg steaks (if you can make meatloaf, you can make them) and home made is often better than convenience / market deli quality stuff.