Uber Visa gets you 4% on dining, 3% on hotels and airfare, 2% for online purchases, and 1% on everything else. It's not a corporate card, but it's hard to beat those rates.
So invalid as a comparison to a corporate card.
Usually company cobranded cards (ex. airlines, hotels) are tightly tied with that company's services, Uber seemed to just want to make a good credit card that people would like to use often, which is unique.
However, it's a personal card, completely different market than corporate cards, so not comparable.