Skating- Andersson Both have similar top end speed, Andersson has better acceleration and agility.
Faceoffs- Andersson Glendening is still learning after being a winger for most of his hockey career and should get better, but might and should doesn't get you much.
Offensive awareness Andersson Neither have lit it up, but Andersson at least has 13 points. Glendening gets less TOI a game and hasn't played with many quality line mates but he should have more than 4 assists at this point.
Defensive awareness-push neither are Selke candidates, but both are solid defensive forwards
Grit-Glendening Andersson is about as gritty as a marshmallow while Glendening is at least willing to get in peoples' faces.
You can't be serious - Andersson has Bert speed.