Why is congregational prayer considered legally superior to calling the Adhan in the most correct Hanafi view?

The Congregational Prayer (الجماعة): Legal Status and Importance

• Because the Adhan can be performed by anyone, even children.
• Because the congregation is the primary intended objective of worship, while the Adhan is only a means to summon people to it.
• Because the Adhan was legislated later in Madinah.
• There is no juristic difference.