Agree. As i remember this stuff from years ago research shows you get best results if you manage to get consumers to have high expectation yet exceed those expectations. Like eg: It will be faster even though it ought (should) not quite to be so fast. "Will" and "should" is then managed as different types of expectations.
It kinds of fits this story. If vega is as you say plus 20% faster than fe they get this effect. Drama and turmoil and exceeding the "should" expectations because fe set the bar low.
Now. If - IF- rx is plus 20% faster. Lets say 30% we get in this situation. Then we will see the result. If the effect is as the theories and research they will have made a gigantic stunt against what we beliewe. Congrats. Mind you my knowledge is 23 years old here.
Imo this is very risky marketing business. If rx is not at least plus 10% faster in gaming it will come back to their face so hard its incredible damaging. Then they will stand as amateurs not even trying to manage expectations. I find it hard to beliewe as 390 p10 and rebrand launch was handled fairly well considering what they had to compete against. But its amd business so you never know.
With today's information at the speed of light world, this is just asking for negative repercussions. Maybe in the old days when controlled environments were privy to info and hardware for benching/leaking/teasing, today you got engineers/creators on Twitter boasting and promoting their own products. And when finalized products don't meet expectations, the backlash is ridiculous. For a recent good example look at No Man Sky.
Even more so than before, today your first impression is most likely your lasting impression. Hawaii never recovered from the launch reviews, 2-3 years later those reviews were still being shared because most consumers don't really dig. "290X review" into Google and you'd get day one launch reviews, not revised reviews with better coolers.
This is why the Vega FE launch irritates me so much. Sure, AMD could have an ace up their sleeve (buy basing this on prior GPU launches, I doubt it). But AMD still went head first with this marketing cluster screw that they've most likely already lost sales on RX Vega. And the last time something this similar happened the usual AMD people shrugged it off as "those aren't very much sales" but they're still sales - that AMD needs.
One bullet point that AMD's PR team just had to ring the bell on basically destroyed the perception of RX Vega.