Carpet in bedrooms always in the UK or any climate where it's not baking hot. Better insulator, feels nicer underfoot, reduces noise to floors below etc etc.
Almost certainly better. Carpet will contain a 'pocket' of still air - which is generally very good for insulation - laminate will not.
ETA - Soul beat me to it.
This.
Carpet in bedrooms always in the UK or any climate where it's not baking hot. Better insulator, feels nicer underfoot, reduces noise to floors below etc etc.