What about the SUPER engines?

Keep in mind that these sites tetsing the engines are using general opening books. Not the opening book the engine comes with. An opening book the engine comes with is usually tailor made for that engine. Take Hiarcs for example. Hiarcs 12 comes with its own opening book as does Rybka. The rating lists seem to indicate Rybka as being the stronger program. This is using general opening books which in my opinion does not tell the complete story.
Using general opening books
Taken from CEGT
Hiarcs 12 – Rybka 2.3.2a (13 – 37)
Taken from the CCRL site
Hiarcs 12 – Rybka 2.3.2a (15 – 40)
Using engine opening books
Hiarcs 12 – Rybka 2.3.2a (51 – 49)
Quite a difference I think
I have also played other engines in a postal chess atmosphere on other sites. I only have a few games complete so far. Due to time, I stopped playing other engines.
Using Fritz8 I played the latest version of Rybka 3 times. My score using my own opening book I use in USCF tournaments: 2 wins and 1 draw. There are other factors to take into consideration when playing postal chess. In postal chess the ccrl, cegt, ssdf ratings do not mean too much and can even be ignored. The best program depends highly on other factors in postal chess.

I have a question about chess engines, if someone would be so kind as to answer it for me?
What are the conditions for the ratings they give the engines? Take for example to engine Fruit, which I am very fond of. They say it’s estimated rating, is around 2780, or something like that. What do you suppose are the conditions on that? What I mean is, was it on infinite mode, and where they using a really SUPER powerful computer? Will I ever be able to acheve a rating like this for an engine on a desktop computer without having to wait for 2 days for it to make a move?
Please respond, thanks!