Yea that one is fine and well covered in the blog post, and pretty easy to spot in light testing. I'm much more worried about the ones that are harder to spot until you have a false negative that turns into a real bug which would be caught by 1 tool and not another.
Can you add some examples of the things users care about that aren't well covered by this? I empathize with everyone who wants a feature comparison chart so they can be confident switching without unknowingly losing important safety checks.
This isn't the primary part of this conversation but I found this quote pretty interesting:
> Now, we are starting to work on Safari again but look at Chrome. They put out releases at least every month while we basically do it once a year.
Even though this was in 2013 nothing about the release cycle (still only major changes with the major OS release versions). I wonder if some of the other emails have more context on this.