This is the same site that confidently claimed that the older 70-200/2.8 IS was sharper than the latest 70-200 Mark 2. I would treat their opinions and testresults with extreme caution...
Yep, DXO comes up with considerable amount of wtf in its scores. But anyhow, reviewing this lens now is pretty strange as the pros / cons of this lens are pretty well known.
1DX, 5D3, 600D, RX100
16-35L, 24-70L II, 70-200L II, 100-400L II, 50L, 85L II, 135L, 17TSE, 24TSE, 40, 100 macro, 18-55 II, 55-250 II, 1.4x III, 2x III, 600RT x 4
When it comes to gear, it is better to vote with your wallet. Bitching on online forums like a lunatic doesn't get you anywhere!