List length comparison.
===

I wanted to write the code for comparing the size of two lists. I made use of the length and wrote this down. 
 
(define (same-size-matrix? mtrx1 mtrx2)
       (equal? (length mtrx1) (length mtrx2))). 

 I thought this was going to work for me, but I found out it only checks the overall length, not the sublist. For example it returns true when it compares for. '((1 2 3 4) (4 5 6 6) (6 7 8 9)) and '(( 5 4) (3 2) (7 1)), but it's supposed to return false, because the first has 4 values within the list and the second has only two even though they both overally have same length. How do I go about this. Any help would be appreciated. 