Are you talking about the UPS trains n several railroads ? If so, that's not any conflict with PSR. Precison scheduling is what UPS demands. And as one of our largest ransportation companies, UPS can afford to pay a rate that makes it's trains profitable to the railroads.
BTW, I was there (NYC) at the time of the Super C. It's failure to to thrive was not a cost or operating problem. It was a disagreement between NYC and SF about pricing.