It's not that the A380 can't be accommodated. Remember this airplane still fits into the 80 x 80 meter box that is the industry standard. That was a design parameter.
But as for seeing it in SXM
that is not likely. What airline that flies there, would purchase an A380 and put it on that route? I can't think of one.
St. Maartin to/from anywhere is not a high density route.