They're talking about per-chip performance. Flash write performance really is that low - they get around it by spreading writes to multiple chips. Crossbar can

They're talking about per-chip performance. Flash write performance really is that low - they get around it by spreading writes to multiple chips. Crossbar can do the same thing, in which case the same number of chips provide higher throughput. Read latency is not parallelisable, of course, so there'll be no way for flash to catch up there without making fundamental advances. That is, if all these numbers are correct.