That's a nice looking table. When one side is much lighter at the stain stage, I usually reapply the stain til it is closer to a match. I have also found that prestain helps even out some difference between shades. You probably did this, but some stains have pigments, not dye, so if there's a time difference between one face and the second one, the pigment could have settled out. Re-stir if using pigment stain. Prestain helps, but it too has about a 2 hour working time.
The more I do, the less I accomplish.