Kurt Thomas' career-high - 14.0 ppg
Boris Diaw's career-high - 15.1 ppg
Raja Bell's career-high - 14.7 ppg
Tim Thomas' career-high - 15.8 ppg
Those are NOT the high teens, furthermore why are you acting as if Kidd didn't play with players that either had similar career-highs or better during his prime?
Kerry Kittles (17.2 ppg)
Kenyon Martin (16.7 ppg)
Richard Jefferson (22.6 ppg)
Rodney Rodgers (15.1 ppg)
Keith Van Horn (21.8 ppg)
Shawn Marion (21.8 ppg)
Clifford Robinson (21.3 ppg)
Penny Hardaway (21.7 ppg)
Tom Gugliotta (20.6 ppg)
Vinny Del Negro (14.5 ppg)
Todd Day (16.0 ppg)
Rex Chapman (18.2 ppg)
Kevin Johnson (22.5 ppg)
Alonzo Mourning (23.2 ppg)
Robert Pack (18.1 ppg)
Vince Carter (27.6 ppg)
Eric Williams (15.0 ppg)
Nenad Krstic (16.4 ppg)
Jeff McInnis (14.6 ppg)
Kidd has all these players who could 'score 20 on any given night' according to your logic - what's his excuse for not being able to run a top-10 offense at any point during his prime? He had all those players, yet from the age of 26 to 35 the offenses he was in charge of ranked - 16th, 22nd, 17th, 18th, 25th, 26th, 25th, 16th, 25th.
With those Nets' defensive schemes and how well they helped each other, they'd still have a good defense if Nash replaced Kidd (Nash wasn't a liability, he was smart a defender who knew his limitations, and was one of the better guards at drawing offensive fouls - similar to Ginobili) - plus they'd have one of the best offenses in the league. They'd take a hit in defense, but would more than make up for it and then some on the offensive side if they had Nash instead of Kidd.
That's simply because you don't understand how basketball works, and don't know how to weigh impact correctly.