These are the same specs as on VG247 and some other sites. So I think this is more or less true. But then I think that the PS4 leaked specs will probably also be true which means that the PS4 will be at least 50% stronger in terms of raw power. the only difference is the software (OS), PS4 has 100GB blu-ray and the difference in RAM.
Stories unfolded with my home made rap songs. Feel free to listen here with lyrics: https://youtu.be/vyT9PbK5_T0