As I stated in a different thread, it's important to look at Louisville's work against Miami and Florida State. Since the year 2000, which is modern history, UofL is 3-1 versus Miami and 3-4 versus FSU.
This is important because it highlights what UofL can do when their house is in order. They can absolutely compete and win against the best. Brohm knows this and must consider this strongly in his approach.
Overall, the ceiling at UofL is higher, possibly much higher than the Purdue ceiling. Purdue WILL NOT be beating up on Ohio State again, that was a damn fluke and I think people with common sense know that. The best part of the Purdue job is the division they reside in but even that will change sooner than later. They will not trump Nebraska starting next year. It's a 7 win job, and that's on a very good year for them. Louisville is a legitimate 9 win per season program, with a great chance at 10+. Huge difference in ceilings, huge difference.