It's not unpleasant, yes there will probably be more felt recoil than your G19, but that's to be expected. There are things that can be done to reduce felt recoil of the LCP/P3AT such as an add on grip sleeve and the addition of a pinky rest, the rest will "lock" the gun between the fingers and make for less shift in the hand.
As for what it compares to...given you listed brands, not calibers I don't know what to tell you. I would probably equate it with a G23 compared to your 19. Out of the box the gun is most likely going to jump in your hand a bit as there's very little recoil absorbing mass and the short barrel makes for increased muzzle flip.