I have never played
Gurps, so I don't know. I buy some things that I expect are inspired by or in response to d&d as go alongs with the collection. Especially, if the price seems reasonable or low. The acknowledgments seem to go out of their way to avoid mentioning d&d. Other games are mentioned as inspiration. Dunno if this was a legal issue, or ego, or what. I do like what I read online about the influence of this on attribute points, as apparently this system heavily influenced the alternate advancement systems in some of the MMORPG's like Everquest. As I was an avid EQ player, that adds to the interest of this for me.