I'm not on drugs (today), but generally speaking I rate guys who'll stay for 3-4 years higher than guys who will likely stay just 1. Most one-year players are much better NBA prospects than they are college basketball players, and unless you have an Anthony Davis, once-in-a-decade type guy, I don't think it's easy to win with a freshman focal point.
Would I complain if we landed Stone? Of course not. But I don't think he'll give us an appreciably better chance of winning next year, and suspect he'll be in the league the year after that. Baptiste, on the other hand, could end up being a guy we build around for a few years.
Obviously YMMV, and we really can't lose. I just don't think it's as cut and dried as "Top 5 vs. Top 90."