I just tested Capture One on my Sony Alpha SLT 99. On the ColorChecker, deviation in Capture One 7.1.3 is almost twice compared with LR 5.3.
It is well possible the profile is good, but not accurate. To be more specific, it may be that it produces pleasant skin tones in studio conditions but the colours are less accurate.
The targets were illuminated with two Elinchrome D-lite 400 flashes with soft boxes on each, and WB taken on second left gray field on the colour checker. Exposure corrected. -0.41 EV in LR5.3 and -0.93 in C1.
|C1 7.2||LR 53 profile 131225||LR 5.3 AdobeStandard||LR 5.3 Adobe RGB (D65)|
This is pretty similar to the results I got with my P45+.
For completeness, I used a camera specific profile generated automatically by Adobe DNG Profile Editor. Adobe Standard values in third column.
Note! As pointed out by Bart van der Wolf in another posting, the files have different white points. This depends on me using Prophoto RGB in LR5.3 and Adobe RGB in Capture One (as Prophoto RGB is not a recommended output colour space in C1). I rechecked the results exporting from LR 5.3 in Adobe RGB. There was a small difference. Most thankful for Bart pointing out the issue.
As a small side note, I am aware the we are shooting real world subjects and not test charts, but test charts have a couple of advantages. They designed to measure certain parameters and they are pretty reproducible.
Capture One has an excellent reputation for color rendering for dSLRs.
Color is subjective so of course you're neither right not wrong if you say YOU don't like c1's color engine, but if you ask 100 people who have used c1 or you look back through posts on c1, and you'll find its likely the #1 reason stated for why people like c1.