The following Two data contracts are equal.

[DataContract(Name = "Maruthi")]
public class Car
{
[DataMember]
public int Cost;
[DataMember]
public int Bhp;

}

[DataContract(Name = "Maruthi")]
public class Car2
{
[DataMember(Order = 2)]
public int Bhp;
[DataMember(Order = 1)]
public int Cost;

}

The data contracts are said to be equal if they have
- Same Namespaces
- Same Names
- Same Data Member Names
- Same Order of the Member Names

Snippet-1 :
As order not specified, The default Order is alphabetical (Bhp,Cost).

Snippet-2 :

Here the Order is based on the order attribute..which is (Cost,Bhp).

As the order of the data member names differs, the above statement is false.