Which Eurifighter? Which Gripen? Future Gripens will all be E/F.
Future Eurofighter will probably have AESA radar. The defakto
prototype for Gripen E/F have been flying with AESA radar a year
now.
If we compare today's Eurofighter with Gripen E/F, will Gripen
come out as superior, with its higher turnrates, lower signature in
(radar, IR, visual), better radar, better datalink and higher
range. The other performance is similar.
A qualified guess is that Eurofigher will have a slightly better
AESA-radar than Gripen in the future, due to it´s bigger radome,
and a datalink in the same class as Gripen. At that time will
Gripen have The GE 414 EPE engine and be a bit faster than
Eurofighter.
It`s clear that Gripen is superior today and have the
possibility to be superior in the future.