Absolutely straffo
I will not enter to discusse these tests. In any case, remember that these comparation is valid only for 10 mins, then D9 wep is off and Yak would be the uber one all the time.
Ok, Now I will forget the topic about killing dweeb pilots and will get into a more serious topic: performance charts and tests.
You cant go, see a performance chart and say, hey, this plane is uber or this plane is sht, cause we dont fly airliners in this sim, we fly fighters that need to maneouver to get the kills. Top speed, substained climb, roll rate, etc are all measures taken in a "laboratory" environment. In these tests you will not find resulting speed after one or two 4g 360 degree turns at 5000 feet, for example. In fact you will not see the resulting speed loose/gain after changing anything in the control surfaces. And that is what counts for air combat.
I'm in a D9 pursuing a yak in a loop, I start the loop faster than him but he outruns me at the end of the loopv as well as outturns me into the loop by a wide margin, now where is the top speed advantage of the Dora??
Now we are in a vertical climbing zoom, I'm able to outzoom marginaly the Yak, but while I need 4 secs to invert the course at the top, he needs only 2. Where is the substained climb advantage of the Dora??
In my experience, D9 is better than Yak just if both keep the speed above 450, where no one will be able to score a single hit at the other.
About "(if you run out of wep ... it's you problem not mine)", this is my problem just because D9 has that limitation while Yak9U hasnt it. Now go and compare D9 without wep with Yak9U. This is like "(if your plane is slower than mine ... it's you problem not mine cause I have a faster plane)"
About:
0 Throttle Deceleration Winner D9
Speed Retention Winner D9
Read the test procedure and you will notice that this has little or nothing to do with E-Retention in combat. I insist, we dont drive airliners. These tests are done in a no-control-input environment. That is, you just dont move the plane.