In my humble opinion, there are two types of oil: new and used. The differences in the brands are what bases and additive package they put in for the market segment/price point they are trying to hit. Some hold up better than others, but if you use the right type and change it often, you will do ok with most of what's out there.
I agree. Most motor oils and oil filters are pretty good nowadays. I just did an oil and filter change on a car that passed 12,000 miles since the last change. https://www.youtube.com/watch?v=YfIx5nSh4zU