SQL Ninja PK Clustered or Non Clustered for GUID

Hi today I would like to share with you experiment I did small experiment for checking improvement of operations in table with primary key that has unique identifier (GUID) type and it is PRIMARY KEY in this table. I want to check if PK will be CLUSTERED (by default) and if PK will be NONCLUSTERED index. There is a pervasive question in any job interview, so probably all of you already know the difference between both index kinds. But I would explain that CLUSTERED index is sorted physically and the NONCLUSTERED is not. I used 1 million rows for both test tables and measured INSERT and SELECT statements times. Below you can find the test script. The script is straightforward and collects data from SQL Statistics. If you like to reproduce this experiment, please run every part finished with the go statement 1 by 1 in order. I hope TSQL code it is simple to understand.

use tempdb
go
create table TestTableClustered (
	ID uniqueidentifier not null,
	Number bigint not null identity(1,1),
	Stamp timestamp not null,
	constraint PK_TestTableClustered primary key clustered (ID)
)
create nonclustered index IX_TestTableClustered on TestTableClustered (Number)
create table TestTableNonClustered (
	ID uniqueidentifier not null,
	Number bigint not null identity(1,1),
	Stamp timestamp not null,
	constraint PK_TestTableNonClustered primary key clustered (Number)
)
create nonclustered index IX_TestTableNonClustered on TestTableNonClustered (ID)
go
declare @count int = 1000000
set statistics time on
;with n(n) as (
select 1 n
union all
select n+1 from n where n < @count
)
insert into TestTableClustered(ID) select NEWID() from n
option (maxrecursion 0)
set statistics time off
go
declare @count int = 1000000
set statistics time on
;with n(n) as (
select 1 n
union all
select n+1 from n where n < @count
)
insert into TestTableNonClustered(ID) select NEWID() from n
option (maxrecursion 0)
set statistics time off
go
set statistics time on
select * from TestTableClustered order by Number
set statistics time off
go
set statistics time on
select * from TestTableNonClustered order by Number
set statistics time off
go
drop index IX_TestTableClustered on TestTableClustered
drop table TestTableClustered
drop index IX_TestTableNonClustered on TestTableNonClustered
drop table TestTableNonClustered
go

And here you have results for above scripts. I dropped results for SELECT statements, so it is not whole output of the scripts, but just last result set.