Yet another, "why was this question closed?" post. Sorry, but I genuinely don't understand this one.
I put posted a Q&A Format question (ie. I answered it myself to share research and knowledge):
What are the major differences between Apple Watch versions?
It was closed for being "Off Topic", and yet less inclusive questions along the same lines are accepted elsewhere on the site:
What is the difference between the original Apple watch, and the 2016 announcement of "Series 1"
What's the difference between Apple Watch and Apple Watch Sport?
Is there a difference regarding battery between Apple Watch 38 mm and 42 mm?
And they're just three questions to do with the Apple Watch. There are countless other accepted questions asking for feature comparisons between iPhones, iPads, and other Apple hardware.
I feel a question that helps people quickly see the major differences between Apple Watches is useful to users and completely on-topic for this SE. Why am I wrong?
Edit: Just to broaden this outside of Apple Watches. The site is filled with accepted questions asking for tech comparisons. For example, iPhones:
What are the physical differences between an iPhone 4S and an iPhone 4?
What are the under documented differences between iPhone 6s and iPhone 7?
What are the under-documented differences between iPhone 8, iPhone 8 Plus and iPhone X?
What are the under documented differences between the iPhone SE, 6s, and 6s plus?
What are the differences between an iPod touch and an iPhone 4S?
What are the technical differences between A1387 and A1431 iPhones
What are the software differences between a standard and plus version of an iPhone? (e.g. 7 vs 7+)
Is there any difference between the 2016 and 2017 iPhone SE?
I'm not sure why having so many disparate and separate questions is preferable, when some of these could be collated into a more generalised "canonical wiki"?