These all are best answered by Islamic Awareness. I am astonished by their in depth knowledge of the Bible, The Quran and the history in general. Read in their site:
Historical Errors Of The Qur'an: Pharaoh & Haman
The 'Samaritan' Error In The Qur'an
Al-`Aziz & Potiphar
Qur'anic Accuracy Vs. Biblical Error: The Kings & Pharaohs Of Egypt
http://www.islamic-awareness.org/Quran/Contrad/External/ezra.html
