Holmgren has a true shooting percentage of .677, compared to Wembanyama’s .517, scoring on a similar volume.
Chet is shooting 10% better from two, 15% better from three, and 12% better from the free throw line.
For comparison, during his MVP season, Embiid had a true shooting percentage of 65.5%, while Brooks was at 49.4% in an awful shooting year.
That is a 16% difference between Chet and Wemby vs. a 16.1% difference between Embiid and Brooks
https://www.basketball-reference.com/players/h/holmgch01.html
https://www.basketball-reference.com/players/w/wembavi01.html
Wemby wasn’t drafted because his offense was going to be amazing on day one. Chet being this efficient is a surprise. But Wemby being somewhat inefficient if asked to carry large volume of scoring as a rookie is not in the slightest a surprise to anyone who watched him play and shoot the ball before entering the NBA.