Excuse me for the late reply, Nobody knows the real capabilities of these aircraft but the larger wings give it that it would reduce drag, that’s my speculation and having a vertical stabilizer does not mean its worse in stealth.
There quite isn’t a proper definition of a “6th gen” having a vertical stabilizer does not mean it’s completely worse, These are only early models of what it could look like
For what it’s worth, generations should be a leap ahead in airframe design. And if a plane isn’t 6th gen, and instead a 5.5th gen, doesn’t mean its worse in overall capabilities. Kfir C10 is better than “4th gen” F-14A Tomcat. Generations shouldn’t mean one is worse or better, but rather the tech of the airframe design.
What’s special about removing vertical stabilizers is it is a leap ahead in an engineering feat. The US and other countries for a long time could not achieve supersonic speeds when removing vertical stabilizers, hence why the B-2 and B-21 Raider are subsonic and also why I don’t regard the B-21 as 6th gen even though Northrop claims it is.
The ability to go supersonic and remove vertical stabilizers have many upsides/advantages and also amounts to a breakthrough in engineering. It increases fuel effiency, decreases drag, decreases cross section, and also proves that a country/manufacturer can accomplish an engineering feat. Fighter generations should be, “Did this country unlock the capability to make this design”. Not necessarily if the plane is better in every aspect.
I’m fully aware that removing vertical stabilizers could have a few advantages, although still GCAP could probably change its design. I also was stating earlier than doing so doesn’t really mean that a plane is instantly better in every aspect but I understand
They did show this design but imo I don’t know about the canards, it looks pretty, well kind of unique but also strange for an NGAD, I could just be morally wrong