i think jason kidd doesn't know how to used 2 iso players
1st of all johnson is somewhat too slow to defend 2's, and pierce is slow guarding the 3 but i can see pierce having more points because, he is the best player there who i think can attack the basket more, (no iso johnson and a healthy passing pg not named williams)
look at heat lebron and wade both iso,
15 to 19 and 20+ in some games is great
and yes its good to preserve pierce for playoffs, and depending on match-ups at 3
but 20minutes to 28minutes a game should be fine, to get him back to his rhythm
and if they sign a guy like shawn marion it will definitely help pierce a lot carrying the 3 spot, and have webster as your 3rd option, and porter as SG/SF options