GUID vs INT clustered PK's (GUID wins again)

BEGIN TRANSACTION

CREATE TABLE Table1(
        [Guid] [uniqueidentifier] PRIMARY KEY WITH (FILLFACTOR = 90),
        TestID INT IDENTITY(1,1),
        UNIQUE NONCLUSTERED (TestID)
)

DECLARE @i INT
SET @i = 1
WHILE @i < 1000000
BEGIN
        INSERT INTO Table1 (Guid) VALUES (newid())
        SET @i = @i + 1
END
ROLLBACK TRANSACTION

-- 23 seconds

BEGIN TRANSACTION

CREATE TABLE Table2(
        [ID] [INT] PRIMARY KEY IDENTITY(1,1),
        [Guid] [uniqueidentifier] NOT NULL,
        UNIQUE NONCLUSTERED ([Guid] ASC) WITH (FILLFACTOR = 90)
)

DECLARE @i INT
SET @i = 1
WHILE @i < 1000000
BEGIN
        INSERT INTO Table2 (Guid) VALUES (newid())
        SET @i = @i + 1
END
ROLLBACK TRANSACTION

-- 26 seconds