I see what you mean, but one speaker has a ribbon tweeter, and the other is aluminum. For me, at least, that's a very big difference. But I'm very picky when it comes to high frequencies.
I'm not sure if I'm right on this, but it makes sense. Def-Tek is known to be more of a HT speaker than music. Since its the same owner, Golden Ear may be designed as a music first speaker, in an attempt to gain that segment of the market. If that's the case, I would expect the bass on the Golden Ear to be very different. Def-Tek is loud and "boomy" in the bass. Most audiophiles don't care for that and want something more controlled and musical.