I think someone loves titles, let them be proud of that.
The Mod Deino told us that, Chinese Y-20 doesn't reach the max payload ( but limited payload ) with Russian D-30KP engines. So Y-20 still not reach its own performance. It's too early to claim Y-20 has better payload than IL-76/IL-78 at this moment. Similar to claim J-20 reach its designed configuration.
I didn't say that Y-20 is worse or better than C-17, but D-30 engines have poorer thrust / thrust reverser performance, so it's quite clear that Y-20 would need longer runway to take off and landing, and there isn't clear evidence that it operates at max payload, so who could state how long the runway Y-20 need.
external blown flaps on C-17 for STOL , which is absent in Y-20
Nope the Me 363 Gigant was way before that, and Britain, Italy, Japan
has all developed heavy military transport way before this one.
Possibly also Canada.
As far as I understand, the engines of the Y-20 are Russian, and while China is developing an engine that might replace it, other comments about Chinese jet engine technology here on PDF, are less than positive.
Until You can show production with Chinese Engine, you are not on Your own list.
By the way, are You aware that Tokyo has the worlds tallest Tokyo tower?
I am waiting for Sweden to develop a Y-20 similar size transport plane. Year 2099? Loser
No, they are winners. Have to put bundles of money to make ourselves giant military transport aircrafts isn't the best way to have some aerial transport capability.
Different from others, China has to build themselves or with support of Russia to have that capability.
Beside the manufacturing capability, there's a few countries have enough demand for military heavy lift aircraft to solely develop themselves a model. They can buy or share if they have demand, like some shared NATO C-17s, C-130.
US ended its production of C-17 with the reason NO ORDER from any branch of US Army, Airforce, Marines ... and foreign countries. There're some brand new C-17s in stock, available to sell too. Even Vietnam could ask for the sale.
Military transport isn't cost / effective like civil cargo airplanes, some countries choose to use dual use aircrafts.
No offense. China is still in early phase of making jet transport aircraft, even behind Japan.