This^^
Using Madsen against the MG-13 will give you the exact same feeling the Axis have while going against PPDs with MPs. What changes is the ttk for these weapons and and not a lot else.
PPD has lower recoil on paper compared to MPs but in practice is harder to fire accurately when going full auto. The German LMGs all have low recoil but due to their higher RoF, you have to fire in bursts and be extra careful with ammo(for MG-13 and ZB-26) as you are toast if you have to reload. Madsen due to its low rof is much more stable while firing at long distances but can’t be used to mow down squads in close ranges, same as the MPs.