How about just comparing performance, then clock speeds are unimportant. If your computer has a speed of 400Mhz, but it outperforms mine with 20Ghz, are you going to tell me that mine is better in some ways? I don't think so, unless of course mine costs half the price.
That's what it's all about, performance/price. The ONLY exception is when one produces a chip with performance that the other just cannot match.
Edit: it doesn't even matter if one calls it a 5000+ and its performance compares to the oppositions 3000, the cheaper one is better, so even names don't matter.