As shams93 said, the OLPC has
tremendous industrial design, which nothing else I've ever seen matches. The plastic pieces are remarkably thick, and they all either slide or screw together. There are no sharp corners on the exterior. The textured surface is easy to hold and resists scratching and gouging. The latches are simple, durable, double as port covers, and are adorable. When closed, a series of ridges going all the way around the lid meet in to the body to keep dirt, dust, bugs, etc. from being smeared all over the screen. The screen is rubber shock-mounted. You only need one tool to disassemble the entire laptop. It has a friggin'
handle. The lithium-iron phosphate batteries are much more durable than other laptop batteries [0]. And it also has the glorious sunlight-readable display.
The pi-top is only very superficially what shams93 describes.
[0] https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery