DPL vs. LrC: Same, but different, test it yourself…
Exposure
White Slider
Tone Curve
As you can see, both apps do the same in a slightly different way. Adobe has some hidden additions while DPL acts straightforwardly and aggressively - compared to LrC.
Test file (11 steps ProPhotoRGB):
11-step-wedge.tif (100.8 KB)