Player A: 25.5 ppg, 5.2 rpg, 6.3 apg on 43/38/92 splits
Player B: 26.0 ppg, 5.2 rpg, 5.3 apg on 45/36/85 splits
Player A is Steph Curry and player B is Donovan. Remember that Steph couldn't even get the Warriors into the postseason without Klay Thompson last year. There are also more factors that come into play when evaluating a players value including age, contract length, salary, fit with our players, etc. As we've seen with Rudy you have to have a very specific system of players around him and even then he gets exposed defensively in the playoffs. Don is 5 years younger, significantly cheaper, and is well liked around the league so if you're in a big market you can sell other guys on coming to play with him.
Rudy's contract could easily be the worst in the NBA in 2/3 seasons if he has even a slight decline because he's so limited offensively.
HoopsHype has done as the 11th most valuable trade asset in the league, Rudy was 28th.
https://hoopshype.com/lists/nba-trade-value-rankings-top-100/