I somewhat disagree with this. It is true there are two Honda lines of small engine (actually three). The GX are industrial/commercial and the GC are consumer engines - throw away, if you will. Most lawnmowers use the GC line. They actually make (or made ad one time) the GS line, which was an industrialized GC.
However to say the GX is better is not exactly accurate. The GC engines are made to a price point and they will not last as long as a GX, however they start easier, are quieter, are lighter and have more power for a given size than a GX engine. And they cost about half as much. They are way better than any other brand of cheap engine.
I'd rather have a GC engine on anything I use at home, just because they are quieter and much easier to start. I've never had a GS, but it seems like that would be the best of both worlds.
That said, I've had craftsman, Husqvarna, Toro, MTD and Honda pushmowers. The Honda is head and shouders above the Toro, which was significantly better than the others. I wouldn't buy any other brand.