Can't speak from experience, but, for as little as I understand, "more momentum" means that the heavier C152 will be slower to react to your actions on yoke/pedals, meaning you will have to be even smarter at acting pro-actively, before the need really shows up.
The lighter the plane, the more briskly it will react both to factors internal (pilotage) and external (winds, turbulence, cumulus granitos &c)
The C152 advantage would be better stability vs. crosswind and turbulence.