How Can God Lump Non-Criminals in with Murderers and Rapists?

Questions about what to say to someone who finds it hard to believe in a God that lumps non-criminals in with murderers and rapists when he sends them to Heaven or Hell, and whether all receive the same punishment in Hell.  

• What could you ask a non-believer who finds it hard to believe in a God that lumps non-criminals in with murderers and rapists when he sends them to Heaven or Hell?
• Do all receive the same punishment in Hell? Does Hitler receive the same eternal punishment as a Buddhist?