for instance, one's squat is 25% more than one's bench press, and dumbell row is 90% of bench press. to see which excercises one is lagging at?
I think it's normal for your rows to be pretty close to your bench. I DB bench and DB row the same exact weight. FWIW.
you should be able to look in a mirror and tell whats lagging...
nobody cares how much you can lift as long as your getting bigger and are proportionate...
Depends why your lifting.
I second bench and rows being the same.
There's this one, but it is for some upper body exercises only: http://www.t-mag.com/html/52balan.html
It's an article written by Charles Poliquin.
I think DB Row should be higher than DB Press (as it is with me) since the first use more muscles (there is a shoulder movement [retraction by the traps) quasi-absent from the press), and the rows require a lot less stabilization.