The Stylus TG-2 has an OLED display which is better than most waterproof cameras that have been available for more than two years. Most waterproof cameras that have been around for a similar time to it have an LCD display. OLED is a newer technology for displays and has much better colour reproduction, faster response times, wider viewing angles and higher brightness compared to LED displays.
An OLED display is actually the best display amongst all waterproof cameras that have been on the market for around the same time as the Stylus TG-2.
Amongst comparable types of camera the worst display is LCD.