On one side, I can reload fares straight from my mobile phone. It really works like a bank card on buses/O-Train. The OPUS card requires preloading a fare onto the card from a dedicated terminal.
Second, just look at the thing, it just looks so much nicer. Red and white, instead of blue and orange.
Also, unifying public transport cards across the country is a hidden benefit. Take your card, tap and pay.
