I find this interesting with a7/a7r RAW's, have not compared yet.
Frizzle, Nice colors they pop-off my screen.
This is really not a surprise. Adobe does many things extremely well but not necessarily the best at everything. RAW files will always be best converted by the camera manufacturer's conversion program ie. Canon with DPP and Nikon with capture NX and Sony with its proprietary Image Data Converter etc...
Most of us use Adobe camera raw in lightroom or photoshop because it is convenient and can convert most RAW images from many different camera manufacturers as well as post process and catalogue. And can do it quite well.
Try using DPP for your Canon CR2 files or the image converter for the Sony ARW files and you may find that it is slightly better than Adobe camera raw but probably not worth the aggravation.
I for one have tried the image converter from Sony for the A7r files and compared them to ACR in lightroom 5.3 (this is not the release candidate) and find the difference negligible. I will continue to use lightroom for my Canon, Olympus and now Sony cameras.