What we face here is simply the ground effect. It pulls the horizontal stabilizer down, hence the nose goes up. As said by others P3D didn’t really have any “flight dynamics”, a movement through space was displayed and with a lot of skill by 3rd party developers it looked quite good but we actually never moved wings through air. I can’t speak for XPlane but in the MS Flightsim line this sim is the first to really simulate “flight”.