An interesting opposite is the previously mentioned Planetside 2. It was initially released for PC only, and was a resource hog. Now they're working on bringing

An interesting opposite is the previously mentioned Planetside 2. It was initially released for PC only, and was a resource hog. Now they're working on bringing it to the PS4, so they're having to do an extremely aggressive round of optimizations to make it run decently. The optimizations will get a lot of testing on the PC version (think it's hitting the test server next week). PC players will benefit as a result of the console port. Planetside 2 is a weird example, though. I don't think there will be many games that have a 1-year+ delay from landing on PC before they hit consoles.