Hi. I can't be certain, but I would not call it "upgrading" from Canon DPP to Adobe, it's more of a lateral move. By definition most raw files lack some punch, sharpness, when you open in ACR. You have to play w/color balance, and the sliders. If you have "AUTO" selected in ACR it makes some adjustments to the image, if you have "as shot" which is my setting, you need to adjust everything yourself to get an approximation of what a jpg would have looked like.
I never use DPP, but it's possible that DPP is doing more with the image by default since it's dedicated Canon S/W
I hope this might help.