Both planes are incredibly similar
Both planes are based on the Su-27 design
Both planes were released around the same time
Both planes are Ace Combat-themed
Both planes feature stealth-treatment
Both planes feature internal weapon bays between the engines
Both planes' first preview pictures are angled nearly identical

What does this mean you may ask? Well, it leads to the greatest conspiracy theory of all time!

#BelkaAtItAgain

Although seriously I find it pretty funny (and cool) how those two planes are similar in almost every way.