It does seem to happen a lot. Remember all the people poo-pooing the 6D when its specs were released? Many of those here advocated for the 5DII over the 6D, but you don't see many of those in favor of the 5DII anymore. If Canon did its homework, the 7DII should sell well.
+1. Here in the UK ( or should I say England & Wales
) the 5DII used prices held up very well when the 6D was first released, but now they are dropping considerably. I would assume this is because 'the proof of the pudding is in the eating' , and people are finding the eating pretty good.
Strange how this happens with Canon gear. I think it's because they are relatively conservative in new releases, but those new releases turn out to be solid, well sorted. Remember the introduction of the 70-300L ? People howled that it was no better than the non L - because it's paper specification was similar
. Remember the 24-70 f4 IS ? The 6D ?
The only people who are complaining about the performance of the Canon sensors are those that are obsessing over the fabrication process. It's still 500um or whatever so there cannot have been any improvement......
Annoys the hell out of me.