People saying being in pot 3 and have a group of Russia, Mexico, Iran, Morocco or Belgium, Peru, Iran, Panama or Poland, Colombia, Iran, Nigeria Instead of being in 4 and have a group of: Argentina, England, Croatia, Iran or Germany, Spain, Iceland, Iran doesn't make a difference, Come on!!
The worst case scenario of being in pot 3 is getting Germany/Argentina/Portugal and England/Spain/Italy, while things may get more complicated being in pot 4.