Xbox didn't need to have exclusives to be more successful. They started with better momentum and were the 3rd party console of choice. For any online/social games, the Party Chat option remained the leading differentiator.
The PS3 just had to keep making quality 1st party games to stay relevant, and then catch up to XBL on online services which it did in every area except patch sizes and party chat (both issues that were stamped out with PS4 with improvement over the x360 XBL).
Meanwhile XBO XBL is subpar to X360 XBL at launch.







