Starbucks' comparable sales growth crushes rivals such as McDonald's and Dunkin' Brands ' Dunkin' Donuts. Last quarter, McDonald's global comparable sales slipped 2.3% annually. Dunkin' Donuts reported 2.7% U.S. comp growth and 1.7% global comp growth. Weaknesses Starbucks' main weakness is uneven international growth. The Americas and CAP markets are faring well, but the EMEA region might weaken further due to economic troubles across that region. Although comparable-store sales rose in the EMEA region last quarter, revenue declined 10% year over year due to foreign currency impacts and a shift toward more licensed stores.