I was under the impression that lower levels would not be put in a mission with a substantially higher level player. The lower level players don't have a chance to win, or, even place when they are limited to lesser pig stys, or chicken coops.
Also, there are players that have maxed out their "Nursery" to level 5 and they have an un-fair advantage over others that only have a level 1 nursery, or no nursery at all.
All-in-all, There is no fun or motivation to even play missions if you think you won't have a chance to win.
PLEASE... make the levels catagory more fair. PLEASE