Scream 4. Better or worse ending?? Spoilers included!!

My Scream 4 ending. At the climax of the film after Jill stabs Charlie in the heart she says "Dad introduce yourself!!" Ghostface walks in, slips of the mask and it's Stu Macher!! Stu is Jill's father!!! Think back. Jill's mother said "Nobody asks me about my scars". In 1993 she had an affair with a 16 year old, she got pregnant by a serial killer! Stu always had a thing for Syd but he couldn't betray Billy so he went after Syd' aunt. Next best thing!! Kinda corny but no worse than the whole I DID IT TO BE FAMOUS motive!