FYI, Jermaine O'Neal opened up last season with a few 20-10 games.
We all saw how he was by the end of the season.
Point being, older players often start out the season looking great. Michael Jordan could go out there and look 'phenomenal and explosive' for a couple games or a practice or two.
We should be really happy if KG is a) mostly healthy and b) consistently at or near the level he was at for most of the playoffs.