Like it or not most games are console ports, most games are lightly threaded and because of that where the cpu is the limiting factor most games favour intel cpus. You don't have to play those games, but when making broad statements about the gaming performance of a cpu all games should count. There are exceptions and everything could change when we start seeing ports from the new consoles but we'll have to wait and see for that.
http://techreport.com/review/23750/a...essor-reviewed for example shows the fx8350's gaming performance to be roughly equal to an ivy bridge i3.
edit: the bf4 alpha screenshot is interesting, but it's comparing piledriver with sandy bridge. Haswell and Ivy results are missing.