It is true that Intel's own numbers for SPECint2000 tell a very different story, but SPECint is also very much a compiler benchmark, ARM has never released any numbers of its own, and Intel's numbers are not credible (Atom is 33% faster per-clock than an A9 for single-threaded workloads? Don't be silly!) so it's just one more data point at best. We might be underestimating Atom's performance but don't expect miracles.
SPECintCPU has consistently proven a very good guide (+/- 5 to 10%) of comparing totally different cpus. To attempt to just dismiss it as a compiler benchmark is a cop-out of any unpleasant information it is telling you. I would tend to believe it as a general guide until specific application benchmarks tell you different.
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