My understanding is that vendors keep those values secret, so probably the best results are form the raw editor from the manufacturer (Canon). I've also noticed that compared to my program (which uses LibRaw) RawTherapee has slightly different colors, but I haven't investigated if it's the WB, the sRGB matrix, or the tone curve.
Once I finish with everything for my program, I might take a look at their source code and see if I can understand it, and see what's different.
My understanding is that vendors keep those values secret, so probably the best results are form the raw editor from the manufacturer (Canon). I've also noticed that compared to my program (which uses LibRaw) RawTherapee has slightly different colors, but I haven't investigated if it's the WB, the sRGB matrix, or the tone curve.
Once I finish with everything for my program, I might take a look at their source code and see if I can understand it, and see what's different.