MSFS has been successful on the market for a longer time than x-plane, giving them a "head-start". Also, high-quality MSFS development teams usually consist of more than 5 members, allowing them to work faster and release products in more detail in less time. Quoting the PMDG home page, "PMDG is a global business with employees and contractors working in Canada, Belgium, Germany, Greece, Russia, South Africa and the United States. " X-Plane is very close to getting there, if were are not already .