i'm a noob with all this, but my guess is if you squat with dumbells, you likely have the weight down around your knees. when you squat with a barbell you have it up by your shoulders. there's a difference in how weight will feel up high vs low. also the total wieght is connected rather than being 2 independent weights.
I stopped using dumbells since I began the 5x5. I prefer the bar. ...



