Tim Duncan Effect, TBH. No team with Tim Duncan on the bench is going to win less than 50.
Truthfully, there is no reason why this team shouldn't be better than last season. I know some teams have gotten better (at least on paper - we'll see). But some teams have gotten worse. Low saying "potential 50 win team" pretty much means playing as good as last year, and winning a couple of coin-toss games.
If White can hold up, under the increased attention he'll be getting, and Murray is healthy enough to live up to his 17-18 form, the Spurs should win 50. I think Keldon Johnson will bring some regular season help, and LWIV should as well. If Carrol gives the Spurs what PATFO expects? I don't think there's a snowball's chance in that they could challenge for winning the West, but there's no reason this team shouldn't win 50 regular season games. Lowe isn't exactly out on a limb with that prediction.