Unless you are super nitpicky practically identical other than the branding. Former Lexmark and IBM people bought the actual stuff used to make them over the years and formed Unicomp after it was shut down so they are not cheap knockoffs.
I did read that the molds used in some models were starting to wear out, but they have new ones that seem to be getting good reviews.
I ran into it using a PS2-USB adapter with mine. I can’t remember which game but I want to say some kind of FPS where I was hitting a lot, and even then it wasn’t terrible but enough to notice. For day to day typing I never had an issue.
I’ve also just mapped it to Ctrl+Alt or something as well. But ultimately for a daily driver I just got a Unicomp with the super key and use my old one with my retro rig now.
Part of this is also just the fact that simpler = broader appeal to a lot of companies which translates to more money.
I am still blown away that I only heard of TempleOS recently. And also blown away by the actual OS. Like holy hell what a thing.