Why does Delphi's RoundTo method behave differently?

I noticed that the RoundTo () function in both Delphi 7 and XE6 behaves differently with some numbers, and none of them refer to the bankers method as they said in the documentation. I am passing the following RoundTo number numbers (val, -4) in Delphi 7 and XE6 and they return different results for some numbers, can you please explain why?

Value       Dephi7      XE6
69.72505    69.7250     69.7250
69.72515    69.7251     69.7251
69.72525    69.7252     69.7253    <-- diff
69.72535    69.7254     69.7254
69.72545    69.7254     69.7254
69.72555    69.7255     69.7255
69.72565    69.7256     69.7257    <-- diff
69.72575    69.7258     69.7258
69.72585    69.7258     69.7258
69.72595    69.7259     69.7259

      

        
        
        
      

    

This is the delphi code I used to generate the numbers above. I used the code to compile in Delphi 7 and XE6 and got a different result.

procedure TForm1.Button1Click(Sender: TObject);
const
  valueList : Array[0..9] of double =
  ( 69.72505,
    69.72515,
    69.72525,
    69.72535,
    69.72545,
    69.72555,
    69.72565,
    69.72575,
    69.72585,
    69.72595
  );
var
  d : double;
  i : Integer;
begin
    Memo1.Clear;
    for i := Low(valueList) to High(valueList) do
      Memo1.Lines.Add(FloatToStr(valueList[i]) + ', ' + FloatToStr(RoundTo(valueList[i], -4)));

      

        
        
        
      

    

However, if I do it in C # using Round (val, 4), this is what I get, which is consistent with the bankers' method:

Value       Round
69.72505    69.7250
69.72515    69.7252
69.72525    69.7252
69.72535    69.7254
69.72545    69.7254
69.72555    69.7256
69.72565    69.7256
69.72575    69.7258
69.72585    69.7258
69.72595    69.7260

      

        
        
        
      

    

One more thing, with the following code, which is an example from the delphi documentation:

ShowMessage(FloatToStr(RoundTo(1.245, -2)));

      

        
        
        
      

    

Delphi 7 gives me 1.25 and XE6 gives me 1.24, which is contrary to their docs. (delphi 7 doco says 1.24 but XE6 doco says 1.25).

Could you explain why?