I wrote a program that allow two classes to “fight”. For whatever reason C# always wins. What’s wrong with VB.NET?

The issue here is that VB is calling the base constructor before setting its field value. So the base Player class stores zero.

.method public specialname rtspecialname 
        instance void  .ctor() cil managed
{
  // Code size       15 (0xf)
  .maxstack  8
  IL_0000:  ldarg.0
  IL_0001:  call       instance void [base]Player::.ctor()
  IL_0006:  ldarg.0
  IL_0007:  ldc.i4.s   100
  IL_0009:  stfld      int32 B::desiredPower
  IL_000e:  ret
} // end of method B::.ctor