Ryzen is much better positioned anyway because it has almost comparable IPC (Broadwell levels), that means even when you get a dual core/single core optimised game you'll get good performance rather than the horrible situation with older AMD CPUs.
What some people here are anticipating is the situation where games really do scale well to 8 cores, at which point we'd likely see the Ryzen compete against Intel's stupidly expensive 8-core parts and roughly match them in performance while solidly beating them in price/performance ratio. Just like in the encoding benchmarks that actually do run well with multiple cores. These games aren't here now. We aren't there now. But it might be the future.