Large WTT/PTT difference throughout journey

[MidnightFlyer]

I was mooching about Real Time Trains looking for somewhere to go tomorrow and stumbled across this service - 2K09 1017 Newcraighall-Glenrothes via Kirkcaldy: looking at the difference between the WTT and public times it appears to be 2 or 3 mins at each stop past Edinburgh, does anybody know the reason for having such a large difference at every station? I'm assuming it's only a temporary measure as it's only scheduled for a month SO (presumably whilst the Glasgow-Aberdeen trains are diverted via Winchburgh) but found it interesting nonetheless, as I've never seen it for such a straightforward train (on the surface). Have they just kept the usual public times and have just altered the WTT to accommodate the diverted services?

Cheers

 

[Chester025]

If you think that's a big difference you should see the timings for the evening Fife loco hauled turn -

http://www.realtimetrains.co.uk/train/G91937/2013/09/23/advanced

http://www.realtimetrains.co.uk/train/G92832/2013/09/23/advanced

 

[CallySleeper]

This thread is also relevant, again on the Fife mainline. In this case the difference in times possibly affected the passenger's connection times at Haymarket.