8 altums in a 400 sound way better than 8 angels and 12 gourami in a 75.
I have no doubt that anewbie will pull it off with tremendous success.
The point is the marketing image doesn't match reality. How does that help anyone? The person walking into petsmart thinks they can put those fish all together in a 75 because that what the picture shows. It might work, it may fail horribly. But wouldn't it be more realistic to show 2 or 3 angels and a couple of gourami?
Remember the old saying, perception becomes reality?