I will avoid getting into how our streaming performs vs. theirs because we have a lot of resources on why our tech is so fast[0]
That being said, as far as I know, Parsec's new browser-based client suffers from all the issues I mentioned in this blog and at the end of the day, our user experiences are completely different. Rainway being self-hostable you can put it on everything from Azure[1] to your home computer. We have a very unique "Games First"[3] approach and view ourselves more as a gaming service than a piece of game streaming software. As we continue to fledge out our voice, I think you'll be pleased with the results.
[0]:parsecgaming.com