Binning is actually the exception. You can't find binned Snapdragon 855s, for instance. Or most Intel chips. Rejects are generally destroyed. When Apple moved

Binning is actually the exception. You can't find binned Snapdragon 855s, for instance. Or most Intel chips. Rejects are generally destroyed. When Apple moved to the T-chips they also moved several system management chips to it as well (e.g. copy-pasting the design alongside the A10). Software on a general purpose CPU is great, but it simply isn't nearly fast enough for many system management functions. For >4GB/second DMA to go through it (for security oversight, encryption/decryption, etc), for instance -- that simply eliminates it from being a binned A10 at the outset, which was never designed around such a high performance need. The specialized display controller for the touchbar is absolutely nothing like the very purpose-developed display controller in the A10, either. These are all differences that would make it a terrible hack for them to use an A10. Until we have imaging of the T2 innards we can't say, but I'd say with 99.999%+ certainty it is simply not possible for it to be a binned A10. An A10 single core integrated on some new IP (with purpose-suited blocks that perfectly fulfill their roles concurrent with the general processor), sure, but not an A10.