Now you did exactly what I expected you to do. Your reply makes no sense, and together with the lack of any response to the rest of my comment this IMO makes it quite clear that you simply aren't going to follow *any* advice given here and just keep saying the "people in denial" bulls**t.
Anyway, you said you'd cut a tire and show but didn't, so I did - this is one of the cheapest tires available,
Camel CB-506, that was taken off due to age (cracks in sidewalls) after probably <200 km of riding. Again, this is about as low-cost as tires get.
Edit:
Schwalbe Marathon Plus:
http://4.bp.blogspot.com/_E0oZ7ZPKK6...onPlus-Cut.JPG
Racing Ralph (lightweight XC racing tire):
http://1.bp.blogspot.com/_E0oZ7ZPKK6.../Ralph-Cut.JPG
You simply get what you choose and pay for, that's all.