I think he's mostly right. By seniority certain guys like Kay, Wag, and Borucki will be the first called up from Buffalo, unless they are hurt or really struggling. These guys are already on the 40 man roster and Pearson isn't.
The team will do something this year to minimize Pearson's total workload and I think we might see them put a pitch limit on him in Buffalo for several weeks before setting him loose and then subsequently calling him, if/when needed in Toronto.