I can believe it, but reading on a retina iPad mini, I was actually struck by how nice it looked!
I think now that A-grade browsers are generally equal in most basic respects, we often forget to test things that might seem inconsequential and not worth testing, like font-weights.
I actually did a bit of testing, including grabbing VMs of various versions of Windows to see how things looked on XP, 7, and 8.1. It remained quite readable in my testing.
Now that I'm back on a desktop computer, I'm looking and it does look pretty good to my eyes, but I could see how it might be too thin for some people.
I think now that A-grade browsers are generally equal in most basic respects, we often forget to test things that might seem inconsequential and not worth testing, like font-weights.