IMO Marcus Davidsson is highly underrated. Prospects in the Swedish leagues get used as reserve players and end up not getting much ice time.
Wennberg played for Djurgården in his draft year, but that was when Djurgården had been relegated to Allsvenskan. Wennberg had 32 pts in 46 games, but it wasn't comparable.
Djurgården is back in the top league now, but struggled and that meant playing the veterans and bringing in more players. It's the only Stockholm team in the SHL and there's a lot of pressure to win. Davidsson started out playing well, but saw less ice time.
He may not have as much skill as Wennberg, but could end up a solid 2nd line center. The games I watched this season, Davidsson seemed more focused on his defensively play and he was trusted with a regular shift. But it's hard to judge based on that on his offensive upside. The same is true for Lias Andersson who also likely played more conservatively to earn the trust of coaching staff to get ice time rather than showing a lot of offensive skill. But in J20 SuperElit, Davidsson has put up some big numbers at center.
Davidsson likely will have a much bigger role next season and I could see his point production significantly increasing.