I kind of grew up with both Corea and Jarrett. I listened to Is and ARC many, many times, Altshul's playing on the latter was a big stimulus to start playing myself. I see Corea as still searching for his musical identity back then, but it is quite a stretch from Is and Circle to the electric RTF, which I saw live and found too calculated and bombastic. He lost me back then. When he reunited with Vitous and Haynes, I liked that, but all the other stuff left me cold.
The only Jarrett I still listen to is the band with Redman. I find the trio uninspiring and repetitive, and his solos not that special after I heard a local amateur pianist improvise in that style at will during a rehearsal. His attitude bordering on the arrogant spoiled the rest fro me, just as did Corea's involvement with Scientology, which does not seem to be a big issue in the US fan scene.
I respect them both, of course. May Corea rest in peace, he sure found his way, it seems to me.