These are pretty different classes of machines. The 4800H performs 64% better at R20 (representative of rendering tasks), and 61% on Geekbench 5 (representative of general productivity). https://www.notebookcheck.net/R7-4700U-vs-R7-4800H_11683_116...

The Envy 13 is also limited to 16GB of soldered RAM while the Slimbook can be upgraded to 64GB. The 15" version has a huge battery advantage over the Envys.

It's also worth noting that the pricing listed includes a 21% VAT. The pricing is more competitive once you take that into account.