Air Marshal (Retd) Raghunath Nambiar called Rafale as the 'best aircraft' in the sky. He said the jet stands head against Chengdu J-20 if compared. "Rafale is the best aircraft in the sky at this time. To compare it with what Pakistan has, like F-16 and JF-17, wouldn't be anything serious. If you had to compare Rafale against Chengdu J-20, I think Rafale stands head and shoulders above them," Air Marshal (Retd) R. Nambiar said.