I've tested their performance tool on about 7 domains I own and have to say that this tool is useless as the results are inaccurate. There must be some issue with their test servers in few locations (Dallas, Atlanta, LA ... saturated bandwidth or something like that) because I got 5 seconds connection time to my server in New York. I got same results for my VPS in Atlanta (even tested from their Atlanta location !!). I then tested from my dedicated box I have in Atlanta and instead of 5 seconds I got 0.07 seconds! I also did cross server tests with same results, every result below 1 second. Then I decided to ask my friend who also has about 5 domains on 2 different servers to do some tests. And he said that he experienced weird results too.