Hmm, your RAC is way higher than mine on yoyo, but the measured floating point and integer speeds are similar.
Seems like you get a bit more mag from universe than I from yoyo too, I might have to switch projects!
Most the xu4 I see on projects stats pages get around 1100 million ops/sec floating point speed and 5500 million ops/sec integar speed . I dont really know what this means lol, but it seems good in comparison to what my pc gets
You can not compare RAC between projects because they reward it differently.
Project selection for maximum profit also depends on what kind of CPU and GPU you have.
If you would like to read more about it, my link-collection might help you. There are a lot of articles that help you optimize your CPU for example :)