Ah but the statement said if you secure Windows it will be secure, and if you leave Linux in an unsecure mode then it is indeed easier to hack. Yes by default Windows is less secure, but I was talking about what happens if you secure it., which is what hopefully Admins will do for their servers (at least).
Also, Linux is in some ways easier to screw up the Windows due to all the tweaking you can do. So how the whole point was that hacking whatever OS you choose depends on whether or not the OS is secured. Far too many times the blanket statement is made that Windows is easier to Hack then Linux, which I do not believe to be true.