Is Jamison the 2nd most important player in a Cavs uniform?

Beside Lebron he is the only other cavalier who can score inside and outside and is probably the 2nd best player on the team. While he wont be able to outmatch Garnett if he makes his shots from the outside it would be alot harder for Garnett to defend paint against Lebron. The same if he does it against Orlando against Lewis and Lakers because a healthy Lebron will still get his points but need support from the team.