Are these acceleration curves reflected accurately in SHS on TSW 2? https://eversholtrail.co.uk/fleet/class-395/ For comparison, here is the curve for the 375: https://eversholtrail.co.uk/fleet/class-375/
To me the 375 felt a bit quicker to accelerate than the 395 on DC in the game which I thought a bit odd but the curves seem to be close.
DTG may well have got it slightly wrong, but the Class 375 on DC is faster than the Javelin on DC (because of the 395's extra weight and higher top speed). On AC, the 395 goes like a rocket ship - going out of Ebbsfleet high level towards Stratford is very good fun - the Class 375 doesn't go on AC, although the 375/6 has a pantograph, but I'd assume it accelerates about the same as a 395 on AC because it's older. I might be wrong.
A bit of a guess but I assume dual voltage? Think the 375/6 fleet were fitted with shoes and a pantograph