I'm no match for spin doctors. I'm also not spending my Sunday linking articles to you. Let's just say you're right.It's not about whether last level cache is L2, L3 or L4, it's still shared last level cache - slow compared to core's private caches. Apple could easily extract more performance from their core by introducing middle level cache like Intel and AMD have done, by something like 1MB private L2 cache which would have about half latency of last level cache. In phone SOC that performance can't be extracted within power limits so it isn't implemented but for higher performing higher power environment it is easy way to increase performance.