and the layout artists may actually play video games like Bioshock, like real people do, and may add such references
like they've been doing the last number of years
considering they're obviously designed to be similar, both share the glazed look, and the colt is carrying the cage
it is probably a good bet that it is intentional. because otherwise, they could have chosen two random background characters to walk in the background with no facial difference from others and would have had an easy day on the job