I'm sure others will soon chip in but a quick point on what Jan said ...
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.
It's actually the other way around. Microlights though lighter and often more "responsive" are also draggy. Combine that with less momentum and you'll find you have to react more quickly if anything. Say your engine fails on climbout ... you need to react a whole lot quicker in a microlight, but you then have the advantage of requireing less space to land.
Lots more differences but no time to post now.
SS