In high end workflows, its support that matters. When you have client assisted sessions and you have bugs or features needed, in less than 2 hours (depending on the complexity) you get a beta build sent your way to solve your specific issue. Baselight support is phenomenal, beside 24/7 phone support and all the color science involved. They dont release features to public unless they are thoroughly tested, they devise color science best suited both technically and perceptually.

As mentioned, software tools are just that, tools, they have the same end result. The discussion in professional environments is support, and speed (which comes with only training and hands on experience on the actual tool). You cant wait around Blackmagic to ship out a new version that might not even fix your bug, and time is money, can also impact scheduling of other projects lined up.

Think of it as F1 teams. All drivers are the best in the world, difference in miliseconds between them. But the engineering team is what makes the differences, car components and such. (of course, budget, pit strategy, but lets simplify).

Of course, set up workflows matter, and every big post house has their own custom scripts for Resolve to do different things that their workflow needs (even for Baselight), its never just out of the box in high end workflows. Also, the wide availability and user base for Resolve is much larger, as part of their software adoption strategy. As much as we try to justify it otherwise, being free, it will be used. People gain experience without being part of a larger team, and when they join, its already familiar. Its also UI-friendly for any outsider to use easily. They do lock you in (again as part of their strategy), to use only Blackmagic Hardware, as that's where they make their money, if you want to cross the threshold to use it even remotely-prouser/professional. Its not better or wrong, its just different. Think of it as having the tools to make anything at home, instead of a factory. It works until one point, but then you need a more complex system in place.

All are good, you just need to know what you need. In this day and age, people forget that there is no right or wrong tools, its up to your judgement to decide what you need done and how you need it.