Don't be daft."Stack position"?
This seems to be an e-peen argument. Otherwise, why am I supposed to care about the "product stack"?
How fast?
How much?
This is all that really matters if you are not shopping for bragging rights.
The 5600X is not an upgrade to the 3700X - it's a side-grade that's better at ST performance. One single metric.
To be an upgrade it would have to be a jump similar to going from a 2700 to a 3700, or a 2600 to a 3600, etc, etc, etc.