the main reason is everyone (except maybe ballmer :smile: ) predicts the ps3 to be the biggest console this generation, thus companies are sticking there A-grade teams on developing for the ps3 (its where the bigger profits are), there are a few exceptions but in the main the highest priority is the ps3.
its similar to pc games vs mac/linux games though not quite as extreme
its similar to pc games vs mac/linux games though not quite as extreme