Complex sentence: Soriana competes primarily with H-E-B, Supermercados Gigante, Comercial Mexicana and Walmex, touting the fact that they are Mexican-owned and operated.
Split into simpler sentences: Soriana competes primarily with H-E-B, Supermercados Gigante, Comercial Mexicana and Walmex. Soriana emphasizes the fact that they are Mexican-owned and operated.