It's an interesting question. We talk about model year because the information about VINs talks about the 10th digit describing the model year. I wonder, though, whether it doesn't really refer to the year of manufacture. In that case, the model—whether it was built in 2010, 2011, 2012 or 2013—may not change, but clearly the year of manufacture does. I can see no difference between Pterodactyl's 2010 'model' and my 2011 'model' except that his is red and better looked after.
There's no perceptible difference between any of the CB1100s built between 2010 and 2013, except that the US bikes came with black engines, no HISS and a hazard light switch. Does that make them different models? In my view, no. But the 2014 model has some differences—a six speed gear box and different instrument cluster for starters. That may be enough to distinguish them as models. The DLX is a variant on the 2014 'model'.
Ultimately, it's probably a semantic question. Seems to me there are 3 CB1100 models:
Model 1
Built in 2010, 2011, 2012, 2013.
Model 2
Built in 2014 (maybe 2015, but we've yet to see a VIN supporting that proposition)
Model 3
The DLX/EX built in 2014 (maybe 2015, but we've yet to see a VIN supporting that proposition).
Tell you what, though, and for nothing, they're all great bikes and all power to the lucky people who own one.
Edit: I did a bit of a search to see whether I could find the text of ISO 3779-2009 which deals with VINs. Of course I couldn't get the whole thing without paying for it (and that's a topic for a whole forum) but I did find a synopsis
here. It contains this useful definition of what's meant by the 'year' digit:
"year—calendar year in which the vehicle was produced, or model year of the vehicle as determined by the manufacturer".
So it can be either model year or year of manufacture but you'll have to put a Honda executive on the rack to get them to tell which they use!