The saving throw tables make interesting reading if you are a sad statto (like me

).
For instance, a 21st level priest has saves versus paralysation, poison or death magic of 2! A wizard of the same level has a whopping save of 8!
Oh dear Mr Wizard.
Each of the classes has their strengths and weaknesses. An obvious example is that Wizards have a better save versus spells than warriors...
Just remember the general strengths and weaknesses of each class, and use the appropriate character for the job.