BASED ON TRUTH TABLE BELOW:

A>B = A0 B1' B0' + A1 B1' + A1 A0 B0'

A=B = A1' A0' B1' B0' + A1' A0 B1' B0 + A1 A0 B1 B0 + A1 A0' B1 B0'

       = A1' B1' ( AO' B0' + A0 B0 ) + A1 B1 ( A0 B0 + A0' B0' )

       = (A1' B1' + A1 B1 ) ( A0' B0' + A0 B0 )

FROM THIS EQUATION, WE CAN USE 2 XNOR GATE AS REPRESENTATIVE (A1' B1' + A1 B1 ) AND ( A0' B0' + A0 B0 ).