[Venomous Filigree]

Melee details engaged as "A figure is engaged if it is in an enemy’s front hex."
Wizard details engaged as "An engaged figure is one that is adjacent to an (armed) enemy figure, and in one of that figure’s front hexes."

"Armed" being missing from Melee.

Edit:

Also, Melee has multi hex creatures, but no mention is made of "A multi-hex figure is not considered engaged unless it is engaged by two one-hex figures", which Wizard does.