Nice writeup tempest. I’ve struggled with the OB for this battle a couple times comparing Arnold’s to the Osprey to the ~1998 Age of Napoleon magazine article (if I’m thinking of the right one). Some day soon I’ll dig into it more, now I’m thinking I might pickup this copy of Miniature Wargames.
I think the scenario order of battle in the magazine is simplified to make it easily portable to any horse and musket period, so I would only buy it for use as a gaming scenario, rather than to reflect a particularly accurate order of battle. I think the author (Steve Jones) uses the Gill trilogy for his orders of battle, at least those are the ones I’ve seen him looking at around the show circuit.