AVP is a prototype intended to get developers onboard. Apple's goal is to release sleek, lightweight AR glasses as soon as the technology is available, but they can't wait until then to get developers building apps for their AR platform. This way, once they release a lightweight "Apple Glass" product, there will already be a mature suite of apps ready to entice consumers to buy it.
Apple markets AVP as a polished, finished product representative of "the future" because nobody wants to feel like they were suckered into beta testing a prototype that was going to disappear soon as technology allowed for lighter headsets/glasses. That's not to say AVP isn't a great device in itself - it's just a criticism of Apple's dishonest marketing.
The Visor is very different - it's not there to attract developers. It's there to promote Immersed's software and services.
The Visor community is funny because they have an entirely different vision for the product than Immersed does. The community hypes it as the ultimate lightweight, portable do-it-all VR headset, while Immersed strongly insists that the device is narrowly focused on being portable monitor glasses for their Immersed platform (for work and collaboration).
It could be that Visor will be great for gaming, or (more likely) it could turn out that there was a reason why Immersed doesn't mention gaming at all in their marketing material. I don't buy the community's excuse that "they're just a small company so focused on work that they don't think to mention how great these will be for gaming!"