Combine diced tomatoes, avocado, red onion, black beans, black eyed peas, corn, diced bell pepper, jalapeño, and chopped cilantro in a spacious bowl, mixing thoroughly to ensure an even blend. In a separate smaller bowl, vigorously whisk olive oil, lime juice, red wine vinegar, granulated sugar, salt, black pepper, and garlic powder until fully emulsified. Drizzle the prepared dressing over the combined vegetables and legumes, stirring well to coat all components evenly. Store chilled and, if not serving immediately, toss again just before serving. Present alongside tortilla chips.