I think this is great news for those who work for US and especially those who still fly them. You should all be congratulated on turning the airline around as far as on time performance goes. While some of the policies and procedures which resulted in this improvement leave room for question, there can be no denying that this is an outstanding accomplishment.
I do believe, however, as capacity declines, on time performance will improve across the board for all carriers.
The true test for US is going to be this summer, with the highest volumes of traffic, and how well they handle irregular operations due to weather or other issues.
As good as this news is, and I do NOT want to discount it, I just wish that other components of the company such as labor and customer relations would have also improved by now--which sadly has NOT happened.
Again, my congratulations to the front line at US--you should be proud of your accomplishment.