Fair enough, but even then, AMZN is doing worse than Wal-Mart.

I was surprised to read that Wal-Mart has had some fairly large failures in some markets - notably Germany where they gave up and lost £3 billion.

Is there any country where Amazon has tried and failed to compete?

Walmart has to compete with whatever local stores are in your area. Amazon has to compete with every other website that sells things on the 'net.

Plus I'm under the impression that Amazon is investing more into growth at the moment than Walmart is.

Prime is really a killer feature. I'll find myself ordering things I never would have dreamed of buying online, or possibly at all (because I didn't know it existed). And this from someone who balked when Amazon first started selling things besides books!. Living in a small town might be a factor in this, however.

If you look at 3Q numbers, AMZN had 27% revenue growth, while Walmart had 4%. That's a huge difference.

(Walmart didn't announce 4Q numbers yet.)