Yes, there are a couple of differences between the sinks. The Super Sustainable Sink uses a battery-powered pump to draw water from the sink basin into and out of the faucet, while The Real Life Play Kitchen sink is gravity-powered, so there is no need for batteries.
Additionally, the Super Sustainable Sink recycles the water in the sink basin repeatedly, while The Real Life Play Kitchen is filled with fresh water that’s then collected in a used water bin.