Whisk Worcestershire sauce, 2 tablespoons of the soy sauce, 1 teaspoon of the garlic powder and ground ginger in large bowl. Add beef, tossing to mix well. Cover and refrigerate 30 minutes.
Mix remaining 1 tablespoon soy sauce, 1/2 teaspoon garlic powder and oyster sauce in small bowl. Heat 1 tablespoon of the oil in large skillet on medium-high heat. Add beef, stir-fry 2 to 3 minutes, just until browned. Remove from skillet.
Heat remaining 1 tablespoon oil in same skillet. Add onion and bell pepper; stir-fry 2 minutes or until tender crisp. Add tomato, salt and pepper; stir-fry 1 to 2 minutes. Return beef to skillet along with any drippings. Add soy sauce mixture; cook just until heated through.
To serve, fill toasted sub rolls with beef stir-fry mixture. Drizzle each sandwich generously with 1/4 cup of the Aji Pineapple Sauce. Cut sandwiches in half to serve. Serve with French fries and remaining Aji Pineapple Sauce for dipping.
