I don't know how you can tell what's normal for a plane you've never flown, so for me I'll base it on the CAP's I fly. For them I find that the number I have which is 144 is about right.

I've flown the other planes at that speed and they seem to feel right, but who knows since I don't own those models and can't tell if they drop like a rock or float like a butterfly in real life.

So, for me I'd say that the CAP's in the sim fly like my CAP's when the value is around 144%.