That's not a very good indication of relative uses. The AMD64 chips outperform Intel processors of equivalent model in every respect, basically, other than those uses which can draw from the benefit of 'Hyperthreading'. Not all computing tasks actually benefit from that feature.

With the advent of the upcoming dual-core processor models, where the hyperthreading feature is no longer present, the architecture of the AMD64 will give a processor which outperforms equivalent Intel chips in all tasks. At that point in time AMD processors will be the clear leaders in budget, mid-range, performance and server apllications of all types.