Fw 190 was probably the fastest of the lot, with MC.205 and 109G-4 being close (and probably faster once the DB 605 engines were fully rated).
Lighter weight of the Italian fighters made them climb well when compared with the Fw 190. Big wings of the Re.2005 and G.55 were providing lower wing loading and thus better horizontal maneuvering, with the trade off being the increased drag that hurt the speed a bit. Bf 109(G) was in disadvantage if/when the increase in firepower was required, since the extra and/or bigger guns increased drag a lot, ant thus lowered the speed (and the RoC a bit).
So it is basically the 'battle of trade offs', with neither of the fighters having all the advantages IMO.