As a designer, Mother Nature is rather slapdash and a bit rubbish. She doesn't plan, she doesn't have an end point in view - evolution and natural selection is all about just throwing something together from the materials you have to hand. So it is problematic to use words such as "superior" when discussing nature.
An analogy... to make a 'superior' meal, a chef will decide on the recipe, search out the finest ingredients, then prepare them in a very precise way and cook them for the exact correct time. What nature does is more like you or I deciding to cook something after the shops have shut - and therefore having to make our meal from whatever random ingredients are left in the fridge. If all we have is milk, broccoli and ice cream, we could 'invent' the broccoli milkshake, but we can't make chicken curry, no matter who much we want to eat it.
Nature has two solutions to problems - specialists and generalists. You might argue that specialists are superior, because they are very good at out-competing the generalists in one particular area. So a cheetah is a fast pursuit specialist - it has a light, long body and an extra flexible spine to make it very fast. The cheetah is 'superior' to the leopard or lion or hyena if all you are thinking about is speed to run down medium-sized, swift antelopes. But as soon as you need to expand your prey to something else - to take down large prey like African buffalo, or dig up underground prey like warthog dens, for instance - or to defend your prey from stronger predators, then the more 'generalist' leopards, lions and hyenas are the winners, not the 'superior' cheetah.
So you need to think about exactly what features you want to have your artificial creatures to have. Then you need to think about what specialists Nature might have created which can beat it. For instance, if running faster than a cyborg dog is all your story requires, then a cheetah can do it. If running fast, and swimming fast and climbing fast is required, then you'd struggle to find one creature which is excellent at all of them.