So, the current stops and things get colder in Europe, but they have been having serious heat wave issues each summer. Will things be worse in the winters, but better in the summers if the current did stop?
The climate is an extremely complicated system. The first order effect of AMOC collapse might be cooler European summers, but eventual build-up of ice could effect atmospheric systems leading to hotter summers.
Of course, more or less comfortable summers might not matter much with half of Europe starving to death from crop failure.