Here is a more informative article written by our
@Bltizo.
Bltizo focuses on the technical comparison of both planes as if they were two randomly matched fighters and so he misses the most fundamental observation:
the 2015 exercise was recreating the scenario for which Gripen was designed in the 80s - Swedish JAS39 vs Soviet Su-27 in defensive air operations over own territory.
Gripen is typically presented as a small and cheap aircraft with emphasis on STOL and other unconventional solutions as if they were some marketing gimmicks. Those who point to Gripen's role in the Swedish Bas90 system often suggest that Gripen was meant to win through numbers and non-standard approach to logistics. Neither is true. Gripen was meant to win through
capability alone and the economic aspects of Gripen's design were caused by the constant budget overruns with Viggen.
Sweden needed aircraft with
top performance but couldn't afford the cost levels associated with such fighters. Viggen was a highly capable fighter built in the 70s in a country of 8 million. It put the defense budget against the wall. Therefore Gripen is small because this is a way to reduce and control cost, Gripen's construction is modular because this is a way to reduce and control cost, Gripen's softare is written in Ada and has open and modular architecture because this is a way to reduce and control cost, etc. etc.
When it entered service in 1996 Gripen was by far the world's most sophisticated fighter jet and implemented every possible technological solution in service except AESA radars (J/APG-1 on F-2 a year before). Sweden creatively resolved Gripen's lower ceiling of 15km versus Su-27s maximum of 19km with maneuverability, better situational awareness and smaller RCS. Open architecture and Ada meant that it could integrate every weapon NATO had at its disposal and PS-05/A was a generation ahead of anything the Soviets had at the time - especially the N001 used by Su-27.
Therefore Gripen performed well against J-11A because it was designed to do so. It would perform well against J-11B and J-10A for the same reason. It could not perform as well in BVR against J-10C because J-10C is the equivalent of Gripen NG - an aircraft with the next generation of systems and weapons. It can be thought of as a counter to Gripen and Gripen's contemporaries.
JAS39C is not an inferior plane for an air-to-air mission. It is greatly limited in its air-to-ground capability which tends to dominate the concerns of American planners and consequently the media. But Gripen was designed as a defensive fighter countering raids against airfields, not as an offensive bomber attacking airfields i.e performing "offensive counter air" in USAF nomenclature.
For defensive air-to-air Gripen is
superior to F-16C/D Block 50/52, F/A-18C/D or Mirage 2000-5Mk.2, practically equivalent to original Rafale with RBE2 (PESA) and inferior to Typhoon and F-15 without AESA radars - but still capable of successfully engaging them. It is a great plane as long as all you plan to do with it is defend your own airspace and shoot RBS-15s against ships invading your shores.
Gripen winning against J-11B would only mean that Sweden had capable aerospace engineers in the 80s and 90s and we already know that it absolutely did. It would lose against a fighter with an AESA radar because AESA radars were only experimental systems in the 80s and the only aircraft using phased array and long-range missiles was MiG-31.