First of all, Valvoline has been making quality products for decades, so you shouldn't be surprised.

Next, here is an article explaining what TID is, where you get it, and how to interpret it: http://micapeak.com/info/oiled.html

Here is the current TID from Valvoline on their 'Premium Conventional Motor Oil' product (which is their lowest level product and was formerly known as 'All-Climate Oil'.)


Here's the one for Mobil Clean 5000, Mobil's lowest product.


Now, here's the one for Castrol GTX. Notice all the omissions.


There's a reason for that. If you go look at the now-outdated data in the first link of this post, you'll note that Castrol GTX (despite manufacturer claims) really sucked in many areas (like, you know, actually lubricating your bearings) compared to not a few of its contemporaries, and especially in the 20W50 class I pay the most attention to. Well, after that document got out and their phone switchboard started melting down, Castrol decided to stop posting most of the TID for their oils because it was being used to call BS on their marketing claims for GTX.

Castrol is not to be trusted, for this and because of what they did with Syntec.

And this should prove that no, all oils are not the same - they do tend to fall into several bands of performance, but some have other properties that make them useful for some applications, others have superior performance, and then there's Castrol's garbage. But you need not take my word for it; if you read that first link you now have the tools to go look for yourself. Motorcyclists take note - due to formulation changes since that article was written, we can't use car oils in wet clutch bikes any more, so don't use the article's info to compare bike oils to car oils.