The most ethnic it ever gets are popular dishes that will not intimidate anyone, like teriyaki chicken or chicken parmesan, and you won't find the aforementioned tempura batter anywhere in the lists. In fact, it often has totally American versions of foreign recipes, like "Chinese" chicken salad and ground beef tacos in crunchy shells, which do not exist in Mexico.
On the plus side, while unadventurous, these recipes go beyond merely competent and are instead really, unbelievably good. Plus there are 300 of them for $20, which is actually cheaper than the cookbook. Besides, who doesn't love a plate of perfect fried chicken with coleslaw? USA! USA!