Interesting. I didn't know WAM was impacted too. You might want to file a report just in case they haven't realized this yet. Although they probably already have given that they fixed the issue with Special:Analytics. It could be that they just need to extra time to run their calculations since they are missing several days' worth of data. If the WAM data is not available, then that would likely be the explanation for the odd numbers in RailWAM.
Edit:
By the way, I noticed that you haven't configured your RailWAM yet. If you do that, then you can have it log automatically every time you access the wiki. You can also have it log information on a central page so that you don't have each user keeping their own copy of the same numbers.