Very different. This is capping, not just devaluating. If you're devaluating, let's say, by 10%, if you had $10 you will have $9 (it will be still $10 but it will be only worth $9), if you had $100 you will have $90, if you had $1000 you will have $900, etc.
In this case, they're capping as well at $40. If you had $10 you will still have only $9, but if you had $100 (or $1000 or a million) you will only have $40. That's it. That's not just taxing wealth, it's taking all the wealth away.
At the same time there was no physical destruction of physical stuff, so it was wealth transfer not wealth destruction. In theory the country should be approximately as wealthy after this action as it was before it.
