From a gaming perspective, will you tell us what it is capable of that the 360 isn't? You keep mentioning that it's this great machine, but I don't see any compelling arguments to make me agree with you.
All I see are games available on the 360 and the PS3, and the 360 versions are almost always better. Look at FEAR -- this was a game ported to the 360 from the PC. Then it was ported to the PS3 from the PC. The 360 version looks and plays much better, has a better frame rate, cleaner graphics, more vivid colors, etc. And you can't argue that it's a port from the 360 version, because both console versions were ported from the PC.
Look at Call of Duty 3. Look at Spiderman 3. These games have significantly better framerates for the Xbox 360 version. They both have better graphics as well (although CoD 3 is close). The sad reality is that games require a lot of general purpose CPU power and the Xbox 360 has 3x as much general purpose CPU power than the PS3.
Besides ,your 3X more general purpose power of the X360 would assume the 7 SPU of the PS3 have ZERO power applied to general purpose.Thats not the case ,if you have to calculate two times each operation without some help provided by the architechture it evidently reduces the efficiency of the proccesor in half ,but each SPU has as much power as one Core of the X360 (about 25 Gigaflops ) .That lends me to think you simply doesnt know what are you talking about .