It's worth noting that node size refers to very different things between different manufacturers, we have very little idea about whats different/similar between TSMC/Samsung/Glofo/Intel's '10nm' nodes.
It's very possible that TSMC and Samsung are using a less technically challenging (and potentially less technically capable) definition of 10nm than Intel.
Or, it could be that TSMC and Samsung are actually technically ahead of Intel.
Yep, that's a fair point. In particular, because Intel isn't actually shipping anything at 10nm, all we have to go off of is their marketing material for what 10nm means.
It's very possible that TSMC and Samsung are using a less technically challenging (and potentially less technically capable) definition of 10nm than Intel.
Or, it could be that TSMC and Samsung are actually technically ahead of Intel.