Thread:Jens Ingels/@comment-109.166.142.119-20130430122438/@comment-3271569-20130501083209

No because ones: Let see it this way. Every slot has an equal chance to obtain. So when the slots are [11,4,1] you chance on dificulty 1 is 11/16. Since the limit of a dificulty is 11 you can't increase your chance anymore. So the chance decrease if another slot is unlocked: 11/17.
 * On 100 rating you will unlock an dificulty 3 slot
 * On 110 rating you will unlock an dificulty 2 slot

For more info I suggest you read out the Breeding/System