Plaxis Pile behaviour significantly differs from Lpile and Wallap

Hi, 

I have modelled Pile in Lpile, Wallap, and Plaxis 3D. Pile moment distribution in Lpile and wallap is similiar, however, Plaxis shows different behaviour. 

Ground condition. Very soft clay, over soft clay over dense to very dense then rock. 

Lpile and wallap moment gradually reduce to 0 as the depth increase.  While Plaxis 3D pile reverse side moment is evern greater than positive side. (clay modelled as undrained B).

Any idea why this happens ?