Meh, I don't think they do an exceptional job at it, but I guess it depends on the platforms you're using. They've done a miserable job on Android, for instance, Bejeweled is the only game they have on there. It's not a huge deal, as one of my favorite Popcap games, Zuma, has a decent (if not better) substitute in Bonsai Blast.

And it's true, Macs have much better graphics cards these days. And once again, the fewer options might appeal to developers.