Discrepancy between ACT / FFLogs parse?

FF Logs noobie here.

I was wondering why in the few logs I’ve uploaded mine and everyone else in the party is about 3-400 less then what I see in ACT? Are there ideal settings for ACT to use for FF Logs uploading?

Also I have a log that was private I turned public, waited a day and it still won’t rank but one I posted this morning did. Tried the “export” function (not sure what it does).