This is not a scam, it is completly legitamite. Try it, prove yourself right, you will find the opposite outcome though.
This is a Ponzi and no Ponzi can work paying out 5600%. Besides you're hiding the fact it is a Ponzi. Therefore of course it's a scam and of course you will keep asking people to "try" it even with a small amount because every deposit made to you means 100% profit to you because you're not sending anything back.
Fortunately I really doubt anyone will fall in this scam. You're just wasting your time.