i think they are equally important. i think they only won one game when Harris was hurt because this team doesn't have a scoring threat after him and Vince, and I don't think Harris can carry a team like Wade/Lebron can and he doesn't have as much help as them without Carter. This team defenitly needs them both on the court, and should actually add another scorer if they want to get past the first round.
if your talking about for the franchise in general Carter is still a marque (sp?) name but Harris is getting there and will/should be in a Nets uniform longer than Vince