Hi,
I can't really help with this one, never really thought about it until you mentioned it.
I guess if 'gaming the system' is the problem it would probably apply to anything copyrighted, trademarked, commercially succesful. I suppose it's that you are generating interest in your song off of the name of someone/something already successful and in the public eye.
Could you possibly change your title to allude to the character without naming them outright?
Sorry I can't be of more help, I'm sure someone on here can.
Yodasdad