Opinions of other great Ulema regarding Imam Abu Hanifa:

Abu Jafar Muhammad ibn Ali ibn Hussain ibn Fatima Bint Prophet Muhammad
Abu Jafar Muhammad ibn Ali the great grandson of the Prophet Muhammad (Allah Bless him and grant him peace) said:
How commendable are Abu Hanifas manners and how sublime is his skill in Fiqh!

Imam Malik ibn Anas ibn Malik
The founder of the Maliki school of thought, Imam Malik is reported to have said when asked about Imam Abu Hanifa:
Yes, I saw him and I saw him to be a man of such caliber that if he claims that this pillar of wood is made of gold he will prove it to you!

Imam Shafi Al Hashmi
The founder of the Shafi school of thought, Imam Shafi is reported to have said:
The person who wishes to excel in Fiqh is bound to be in need of Imam Abu Hanifa. He was a person who was divinely guided with Fiqh by Allah. I have not seen a greater Faqih then him.

Imam Ahmad ibn Hanbal
The founder of the Hanabli school of thought, Imam Ahmad is reported to have said:
In terms of Ilm, piety, abstinence from this dunya and preference of the hereafter, Abu Hanifa occupied such a lofty position that no one else could reach. May Allah shower his mercy on him!