In addition to nthn's summary (I would also like to know WTF the numbers represent ), here is one piece of evidence that I care about:

All the imgur links...

• On my Jolla 1 - resolve nicely to a picture of some sort with a lot of numbers
• On my Android tablet - resolve to a black rectangular placeholder, nothing more

All the basemark links...

• Jola 1 - a page with some text, numbers, buttons
• Android tablet - page fails to load ("Couldn't establish secure connection ")

In all cases, the default browser was used. It looks like a 2:0 win for the Sailfish browser to me

I would have attached a screenshot to demonstrate if only I knew how to take a screenshot on the damn Android tablet.

EDIT
OK, screenshots added. Had to take them with a camera, the only one I had available (which just happened to be Jolla). The bright dots are reflections of the ceiling lights.