All three NT bids by EW are inconsistent with their explanations.
- Of course, I have sympathy for 3N, as many humans would also make this bid. (So, maybe get rid of the "no fit in C" part of the explanation?) I suppose that (at IMPs) some clairvoyants might bid 4♥ instead and find a nice 6♣ contract, but that's asking a bit much.
- 4NT seems to be another example of GIB not quite getting the difference between counting HCP for NT and total points for suit contracts, although maybe 17-18 is a little high.
- 6NT appears to be another example of GIB having an "accept with anything except an absolute minimum" approach rather than an "accept with the top half of your possible range" approach.