I haven't played Dead Rising in years, but I'd imagine it's kind of dated now.
It's strange how when this gen started and games were all "next-gen" compared to the cream of the crop PS2 titles, it seemed as though there was no way they'd become dated like those launch-year PS2 titles. Yet, these days I don't think games like Blue Dragon, Kameo, Resistance, Crackdown or maybe even Dead Rising as shown by Optimo's experience hold up like they used to.
Kind of makes me glad I played them when they came out. Since I don't really replay games, I'll just remember them fondly as great games at the time.