We don't even know if that was an offer. It was thrown out by someone with no info on whether they were citing sources or just saying what they think it would take. Given how closely it mirrors Gillis' asking price structure and how unrealistic it is, I would guess that it's probably not an offer but rather an example of an offer.
McKenzie speaks in examples, and he doesn't give them if he thinks they are outlandish. As proof, right when Luongo hit the block, he immediately came out and said that expectations were too high on the offers in the media, and that the Canucks would have to take a "soft deal". This rubbed people the wrong way (including myself), but it also confirmed that McKenzie doesn't mince words.
If he felt that Stepan + 1st + Miller, or Schenn + prospect + 1st were valid offer examples, without qualification (as in these are the Canucks ardent fantasies), we have to assume he knows what he's talking about. Otherwise, disregard every rumour and all example talk from McKenzie in the future.
Edit: In the same light, not a lot of people put stock into Rossi rumours prior to him floating Sutter + Despres + 1st, but now that rumour is considered legit?
Edit: Also, we know that NYR moved their 1st. We also know that Miller is playing behind Richards, Stepan and Brassard in their centre rotation. It is conceivable that this deal was realistic. The key sticking point being Stepan, and of course Kesler's unwillingness to go there...