Edit: ...
Very little surprising about this at all except for maybe the speed with which it is happening.
This isn't entirely objective. BCH has 25% of its market cap trading today in volume. There's something weird going on. As for the developers, BCH has very little Github activity while Core is being actively worked on and improved.
I don't have a horse in this fight as I am into other cryptocurrencies but your statement is not very fair.