Courtesy of Wikipedia:
“Kung Pao chicken,” commonly consist of diced marinated chicken stir-fried with skinless unsalted roasted peanuts, red bell peppers, sherry or rice wine, hoisin sauce, oyster sauce, and chili peppers.
“General Tso’s Chicken” commonly consists of dark-meat pieces of chicken that are battered, deep-fried and seasoned with ginger, garlic, soy sauce, rice vinegar, Shaoxing wine or sherry, sugar, sesame oil, scallions, and hot chili peppers, and often served with steamed broccoli.
...but like I said… if you go to the legitimately Chinese restaurants, you can find the truly spicy General Tso Chicken… that’s the good stuff.