The steam deck is nice, but you have to throttle a lot of games performance. And that’s on an already very small screen. I have played the crap out of my steam deck, but there are some games that just don’t work super well. The difference is just the power of the components, primarily CPU and GPU, but also RAM and SSD speeds. It would expect the mini gaming PC to be more expensive than the handheld, if the expectation is that you can play any large AAA game at (basically) full specs with good frame rate. You can’t do that for cheap. I also don’t expect the price point to be a problem