I remember scratching my head at the numbers from Apple... The PowerPC chips were four times faster than Intel (or some such number). Then they released on Intel and it became twice as fast. (Of course, this might have been somewhat accurate if PowerPC did not gain performance at the same rate over the years. Still worth a chuckle, though.)
Apple tended to use numbers that were based on calculations made with AltiVec[0], a very powerful SIMD instruction set on PowerPC processors. Of course many apps didn't benefit much from AltiVec at all.
Apple always cherry-picked those benchmarks. The Apple PowerPC machines were so much slower than Intel-based Windows machines (in actual use) yet Apple would always claiming they were 4x faster. Then Apple releases their Intel based machines and suddenly they were the fastest ever.
