Ok, that's what I thought. The other guys saw the word "profile" and went charging down the wrong road. What you want is a 'develop preset'. Profiles are used as one of the first steps in the conversion of Raws to rendered image files, usually tiffs or jpgs, and when you processed your Raw photos in SPP it would have applied Sigma made profiles, probably different ones for each camera, which would account for the differences in color.
Presets can be used on either Raws or rendered images (although in your case it would be only rendered images), but more successfully on 16 bit tiffs than 8 bit jpgs. They are nothing more than sets of Develop slider positions. You can put shots from the two cameras in the same folder or collection and using the Ctrl+C function to compare them, use LR's editing sliders to get the "2" as close as possible to the "3". Once you are satisfied, save those settings as a User Preset.
In my experience, however, presets are rarely "one button auto fixes", but rather starting points for further tweaks. Differences in lighting, exposure, subject colors, etc. can all require further adjustments.
