I'd say it's like going from Rae to Olofinjana. As I never worked out what Seyi was supposed to be other than someone who would score a few if you gave him enough two yard tap ins, and I don't know what Guedes is.
I think it's unfair on seyi and I don't say that lightly as I hated him. At least olofinjana had some quality on the ball in comparison to the level we played. Guedes as you say is a complete nothing player, he doesn't really do anything that impresses.