The problems with the United States Football League had nothing to do with lack of talent either with player personal or coaching. The Los Angeles Express QB was Steve Young who of course is in the Pro Football Hall of Fame. The Phoenix Wranglers head coach was George Allen who is in the Pro Football Hall of Fame. The Express head coach was John Hadl who is at least a borderline Hall of Fame caliber QB with the San Diego Chargers and Los Angeles Rams.
The problems with the USFL had to with the league trying to grow too fast being at eighteen clubs by 1985 just their third season. Too many clubs in major NFL markets like Los Angeles with the Express that already had the Raiders in Los Angeles and the Rams in Anaheim. And of course moving from a spring/summer league which was perfect for them with no NFL games to go up against. To playing in the fall where they are right up against the NFL.