Yup.. we've seen that..
buhhhhhhhhhh... Almost certainly fake..
If that WERE the case.. why doesn't AMD just come out and say , WE WON... PERIOD..
There's no reason to cat and mouse this..
AMD has actually demonstrated parity already (which is about all they've actually achieved, though there's some give and take).
They demonstrated the 3.4Ghz fixed-frequency 8-core Ryzen matching the 6900k (likely running at 3.5 to 3.6Ghz since its turbo was enabled) in Blender, demonstrated it beating it in HandBrake, and demonstrated equal-to-slightly-better performance side-by-side in Battlefield 1.
AMD has made no secret that they are competitive on a core-to-core basis, they have shouted it from the roof-tops... Bulldozer had no such fanfare from AMD... they showed their 8-core CPU modestly beating the stock-clocked 2600k, but that's about it.
8/16 vs 8/16 with a clock deficiency... and still matching or winning against Broadwell is exactly what AMD showed us, and is exactly what the most trustworthy leaks have demonstrated.
What we don't know:
Memory performance (so far, the samples have had rather bad performance...)
Memory frequency support (apparently 3200 is fine, maybe even 3400, so that's looking up...)
Overclocking potential (we've only seen up to 4Ghz... nothing at all higher... not in the least... not even 4.1Ghz...)
AMD likes to keep things in the dark - that's just what they do. It's risky to make specific claims yourself - you let reviewers disclose what they managed to do, much safer from a legal perspective.
And, of course, AMD is more likely to make headlines with a big reveal - and those headlines drive sales. You don't want people thinking hard and saying... "Well, it's nice that AMD finally caught up to Intel, that might bring down the price of my next Intel CPU."
AMD wants headlines: "AMD Ryzen Beats Intel's Best!"
"AMD Takes the Performance Crown from Intel!"
"AMD Ryzen - World's Fastest Desktop CPU!"
"AMD Ryzen - Intel Destroyer!"
If they did a full reveal already, headlines would be:
"AMD Didn't lie - Ryzen doesn't disappoint."
"AMD Ryzen Delivers on Promises."
"AMD Ryzen - How Will Intel Respond?"
Not bad headlines, but the impact isn't there.