Possibly... but it's not easy to know exactly. What are you comparing? Unless it is all cameras side by side, in neutral colour mode (not to mention all the other highly variable in-camera options), with the same lens (they do vary on colour) with the same subject in identical conditions, then you can never be sure and nobody does that test. If they did, they'd come to the same conclusions as Tony Northrup.
It's actually very difficult, but also largely irrelevant when you take the always changing light quality into account, then post processing variables and the inevitable subjectivity of it all. It's common for people to say on forums that 'Brand X is best' and they surely believe it, but it's a straw argument and actually nothing more than personal preference mixed with a healthy dose of brand bias.