So this is KIND of interesting....
I posted both the color & monochrome versions on Flickr and the black & white one was liked the most. However, the color one had more engagement like comments whereas the B&W had none, but a lot more likes.
On Instagram, everyone really liked the color version.
On Facebook, everyone prefered the color version instead of the black & white one.
I just found it interesting that a lot liked the black & white one here at TPF and on Flickr. - The only explanation is that there are real photographers at TPF and Flickr rather than Instagram and Facebook.
I probably shouldn't look too much into it, but it was just a fun and simple observations. I'm sure time of day I posted the photos had an effect.