Out of curiosity, why don't you think it's the Mirror Orange parallel? It looks fairly similar to this one from the Mirror Orange set which, as you mentioned, has the same serial numbering. If you're confused because you think your card comes from an insert called "Freshman Fabric", it doesn't, as that's what the base cards of the rookie/auto/jerseys say on them, e.g.
Which is MV-S's base card in the set (SN499)
I will say that the notes you find here are sometimes incorrect, especially when it comes to Panini stuff that has confusing checklists and gets entered improperly, but in your case I believe the filters turned up the correct card.