So I'm bored, lets do a rating, shall we? This time lets do a rating of her producers who have done a substantial amount of her work.

So Linda Perry vs Tim Armstrong vs Max Martin vs Butch Walker vs Billy Mann.
LINDA PERRY
Missundaztood - 8
Get The Party Started - 9
Respect - 6
Dear Diary - 8
Eventually - 8
Lonely Girl - 7
Gone To California - 7
My Vietnam - 7
Catch-22 - 4
Catch Me While I'm Sleeping - 9
Try Too Hard - 9
Waiting For Love - 10
Delirium - 3
Free - 10
AVERAGE: 7.5
TIM ARMSTRONG
Trouble - 8
Last To Know - 9
Tonights The Night - 4
Oh My God - 8
Save My Life - 8
Humble Neighborhoods - 9
Walk Away - 8
Unwind - 8
Hooker - 9
AVERAGE: 7.9
BILLY MANN
God Is A DJ - 8
Stupid Girls - 8
Dear Mr President - 9
I'm Not Dead - 9
Runaway - 6
The One That Got Away - 7
Conversations With My 13 Year Old Self - 5
Fingers - 10
Crash & Burn - 6
Words - 8
Bad Influence - 9
Crystal Ball - 7
Ave Mary A - 10
Glitter In The Air - 10
The Truth About Love - 10
Beam Me Up - 9
Where Did The Beat Go? - 7
Good Old Days - 9
The King Is Dead But The Queen Is Alive - 8
AVERAGE: 8.2
BUTCH WALKER
Long Way to Happy - 9
Leave Me Alone (I'm Lonely) - 9
Disconnected - 5
Bad Influence - 8
Mean - 8
This Is How It Goes Down - 7
When You're Through - 10
Push You Away - 7
Are We All We Are - 10
My Signature Move - 8
Run - 8
Is This Thing On? -9
The King Is Dead But The Queen Is Alive - 8
AVERAGE: 8.2
MAX MARTIN
Who Knew - 9
Cuz I Can - 8
U + Ur Hand - 9
So What - 8
I Don't Believe You - 8
Please Don't Leave Me - 9
Its All Your Fault - 8
Boring - 6
Raise Your Glass - 10
F**kin Perfect - 9
Heartbreak Down - 7
Whataya Want From Me - 9
S**t Like You - 8
AVERAGE: 8.3
Max may be generic at times, but he really is a great producer. I do think Billy is a lot more diverse as a producer though. Especially out of this list of producers.