The Action Order in the XML should follow the sortOrder
Sometimes there is a difference between a object because the order of the platformActionListItems are different. Sometimes an item with order 0 comes first, but it is possible that an item with 9 comes first. This is probably an error in Salesforce API, but Gearset should order this list before the comparison so 0 will always be the first item.
Kris Goncalves commented
yes, and "relatedListItem" has a similar setup (provides sort order which is accurate even though ordering returned is random by Salesforce). This would eliminate some massive false diffs in the layout metadata type.
Eric Kintzer commented
this is a great idea - avoids spurious differences which are common when comparing layouts