Nicely interpreted (insert minor quibble about Bruce Wayne and Guns).
Calls to mind the "Weird Western Tales" ep of JLU (http://dc.wikia.com/wiki/Justice_League_Unlimited_Episode:_The_Once_and_Future_Thing,_Part_I:_Weird_Western_Tales – Justice League Unlimited Ep 12 Part One Weird Western Tales (HD) {Best Animated}).
(h/t +Mark Means)
Reshared post from +James Moody
So, a random link to a kickstarter from a webcomic, then looking at some of the artists earlier work has found this…
+Neill Cram +Mark Fairbrother +Matt Byrne and anyone else who likes DC comics…
An artists view of the JLA in the lens of a western. GL threw me slightly until I realised he was a Pinkerton, which suddenly mae perfect sense.
Google+: View post on Google+

That episode is one of JLU's best.
JLU was a great series. And I agree, that would appear certainly in the top half, if not the top quartile.
I particularly liked the cameo by "Grandma Quinn" towards the end of part two. That was another round-about nod to Batman Beyond.