Like I said, you are too biased. History, recruiting, money, exposure, location, weather- Purdue is inferior to Texas.
It does not say it is much of an accomplishment, but it does suggest advantages.
Until you consider that Kansas is right across the border. That's not really much different than Ohio State being the flagship in the state and having Indiana, Purdue, Kentucky, and Michigan State all nearby. Kansas and other top schools will nearly always pick the best players from Missouri. Purdue has an easier time getting players like that because there are simply more of them in Indiana.