Projection systems miss all the time and sometimes quite badly. What you are saying may very well be accurate. However, we also have to take in the possibility of the converse being true: Fans and pundits are overrating this team based on the eye test and missing potential flaws that may be exposed over the course of a season.Projecting the Clippers to 48 wins means something. To me, that something means the projection system is seriously flawed. I really question if this system is any more accurate than the pundits, to be honest.
It wouldn't be a stretch to say that the Clippers overachieved last year and then lost their two best players in a trade with the OKC. While they gained two better players in the deal both have been plagued by injuries in their career. Their system may be building in missed time by George/Kawhi and regression from their role players, all of which might pull down on their expected win total.