Not trying to criticize your article, I was just reacting to your comments here.
"Capacidade de curva sustentada de até 60 graus"
Ok, so his text contradicts his specs.
Also, about the ceiling stuff, i do not disagree with you, but do you consider correct to post something based on older models when the company already has a brochure with that figure?
Obviously, he didn't use the brochure for his specs, but either globalsecurity or another source using those specs.
About the supercruise, my point is he states 1.05 and thats it, no indication whatsoever about that figure beeing just estimated or not. To me thats wrong.
Copied from source, who got it from god knows where. Wrong, well it's just bad practice. The majority of my specs come from Jane's, unless I really researched them. Now probably much of them is estimated without a note that they are. What am I going to do? I don't know which are estimated, if I say they are all estimated I am dishonouring my source, if I start digging deeper I only arrive at less reliable sources, unless I really start to make an effort and trace it all back to the original source by contacting publishers, authors, etc. I just want to have some specs to put on my blog/site...
The problem is that in the aviation press, even the professional publications, authors almost never declare their sources for information, and the marketing teams of manufacturers don't care about all the "if's and but's" attached to a certain number either. It's not a science, and even in science they get in wrong because "this publication said so, so I bet they did their research", but that's another story.
You are a big fan of Yefim Gordon right, you'd be shocked if someone would point out how much errors he has in his publications. And yet he became the "authority" on Russian military aviation.
Now, all of this considered, how much can you really expect from some blog?
All I want to say is that it is great you take it so serious and do your research. But don't get frustrated when others don't, believe me, been there, done that. It's not worth it, errors and inaccuracies are part of the field.