That's just not true. If Maryland loses and Purdue wins (assuming MSU wins as stated in the Hawk Central article), the records of Maryland, Wisconsin, Purdue, and Iowa are all an identical 12-6. As broken down elsewhere, the tie-breaker for those four teams ranks them Maryland, Iowa, Purdue, Wisconsin.
If Maryland wins and Purdue wins, Maryland jumps up to a tie for second, leaving Iowa (2-1), Purdue (2-2), and Wisconsin (1-2) tied for 4th at 12-6. In either case, Iowa take the 4-seed.
Other parts of that article are also inaccurate. While an Iowa loss and a Purdue win does indeed drop Iowa to the 7-seed, to say it sets up a third match-up with Penn State which could be true, but maybe not. Penn State is in a Battle Royale with Northwestern, Nebraska, and Illinois for the 9, 10, 11, and 12 seeds. The IL/PSU and NE/NW games will determine the 10-seed with Nebraska appearing there half the time and NW & PSU 25% each.