Are corresponding rows of matrices x and y the same?

   x y ← ⊂⍤2 ⊢u[?2 2000⍴≢u←(⎕a,⎕d)[?10 29⍴36];]

   cmpx 'x≡⍤1⊢y' '∧/x=y'
x≡⍤1⊢y → 1.14E¯5 |    0% ⎕⎕⎕
∧/x=y  → 7.72E¯5 | +576% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
                         
   x y ← ⊂⍤2 ⊢(⎕a,⎕d)[?2 2000 100⍴36]

   cmpx 'x≡⍤1⊢y' '∧/x=y'
x≡⍤1⊢y → 1.01E¯5 |     0% ⎕
∧/x=y  → 2.47E¯4 | +2333% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕