I tested my 1RMs today on both, and bench is 195x1, row is 165x1...both using barbells.
I think if you test both with dumbbells, your max press will definitely go down, and your row will remain the same or possibly go up.
I think I am about where I need to be in terms of balance, so I would guess bench ought to be a bit higher than row, but that's just a guess. I don't think one-to-one is important, just as long as they are close.
and sasquatch, no offense, but weren't you the guy who commented on Mike Robertson's bench press article and said "so the object is to gain a few ego points by adding more weight"
...change your mind about heavier weights?