Gerrard played RM for a time under McClaren and LM at times with Capello but was always CM under Sven.
Like I said, the only position where players played out of position was LM and that was because (at the time) there was no natural LM around. Other than that, Sven generally played players in their correct positions.
Except for the fact that either Gerrard, or more usually Lampard dropped back to play the more defensive midfield role, of which neither played that role for their club, and was one of the key failings of the time. Yeah, they both played in the middle but its a VERY different role.
Parker isn't exactly the single best passer, or tackler, or footballer ever, but he's been a MASSIVE improvement in defensive midfield for England since he started playing, a HUGE difference. Infact since England started playing, a real defensive midfielder and playing Lampard as a real attacking midfielder, Lampard has looked hugely better, and England "had" looked hugely better. We've since reverted, stuck Barry back in, defence has been injury hit and Wilshire has been missing.
The main other thing Sven had us doing during his time was, being diving cheats, we became a team where EVERY attacking player(which with Lampard playing deep rarely if ever included him) diving like crazy to get Beckham freekicks, that was our entire gameplan, with no plan B, dive, freekick, dive freekick.
Sven sucked balls, tactically inept, and generally retarded while wasting the single most consistant attacking central midfielder and scorer, as a defensive midfielder.
Capello sucks, its not about points, internationals are set up so that you have to be flat out retarded to not get into the late knock out stages of a tournament if you are one of the top leagues in the world. England and first knock out stage is the VERY LEAST we should achieve, thats how bad McClown was.
Capello has us playing generally not very good football, when the "in" players aren't available his team selection is woeful. Young should have been the first name on the team sheet for four years, yet again he's been involved in every goal scored, his record in either getting the assist or scoring since when he was finally started around xmas last year is phenomenal, he's been by a distance Englands best player.
Wilshire was excellent, Parker has been mostly excellent, yet when one or both is out, we drop back to Barry who has been consistantly absolutely crap for England for the best part of 10 years. Jesus Christ, Walcott ffs, anyone, and I mean anyone who picks Walcott as a first team player, in any position at any level is just stupid.