I appreciate it's quite hard to make championship teams worse than premiership teams, whilst keeping fans of these teams happy! The fact of the matter is that individual teams are *almost* as good as premiership ones, but not quite! Some players in the championship are as good as or better than most in the premiership and should be statted as such - Nugent, McSheffrey, Bale etc - whilst others are good enough to have premiership stats for the average player - ie Skacel, Quashie, Healy etc.. if you get me. So I think that the better Championship sides should be almost as good or slightly better than the worst premiership sides, with a few stand out players and so on - and some should have special abilities - for example, Rasiaks body balance should only be in its 70's, as he's not that strong for a man of his size - however, he should, IMO, get a star for his scoring ability - like it or not, 16 goals so far says hes a natural goalscorer.
The above is the way I'd treat editing it, but I appreciate its hard unless its your own side. The temptation is to just lower all stats, but if you think about it, many players in lower divisions are very quick, many are much quicker than some premiership players - again, Bale has good pace, Bradley Wright Philips has pace, by any standards. Idiakez is good on dead balls by any standards. Lundekvams defence stats should be high, as proved in most of his career, as should his teamwork, mentality, heading etc - but not so much his pace, attack (very low!), long passing and so on.
The above is the way I'd treat editing it, but I appreciate its hard unless its your own side. The temptation is to just lower all stats, but if you think about it, many players in lower divisions are very quick, many are much quicker than some premiership players - again, Bale has good pace, Bradley Wright Philips has pace, by any standards. Idiakez is good on dead balls by any standards. Lundekvams defence stats should be high, as proved in most of his career, as should his teamwork, mentality, heading etc - but not so much his pace, attack (very low!), long passing and so on.