i was playing omaha 8/b online and had a question about a hand i was in

i had 6c, Th, As, 2s in my hand and the person i was playing against had
Q, Q, 4, 5,

The board read 7,2,7,j,3 so that gave me A,2,3,6,7 LOW and he had 2,3,4,5,7 low who has the better low hand, thanks alot