This is a common "problem" for people, who are new to either LR or RAW workflow.
Canon (and also Nikon) cameras are embedding the JPEG picture style to the RAW metadata, and when you import your shots in DPP, this picture style becomes automatically applied. The most visible effects of this used to be contrast adjustment and the noise reduction.
Thus, you get a picture, like the in-camera JPEG, made by DPP.
However, Lightroom used to keep almost every settings at 0, when importing, except if you use presets. So you really see the raw picture, and you have to develop it yourself like the in-camera JPEG, if you wish so.
Notice, that during import, the small pictures you see at first are like the DPP ones, and then they become the flat LR ones. This is due to the embedded small JPEGs in the RAW, which LR shows you first, until it creates its own previews. These embedded JPEGs also carry the in-camera picture style.
After all, the "issue" is just the way things work here.
(By the way, if you check that garbage collector like stuff on the right side of your pictures, you really see the detail loss due to the noise reduction applied by DPP, just to confirm what I said.)