Lost is a multi-course meal at a unique resturant. you don't always love every single thing about it and their might be some time between courses, but there's enough satisfaction in it that you'll return and maybe even order the same meal again. Heroes is straight up fast food. They give you exactly what you want and at a pace that keeps the fat happy. The Lost folks are telling a story. A finite and multi-layered story. The charactarizations are generally pleasing and are certianly rewatchable. The underlying mythology is very rich and mysterious. When it ends it'll be rewarding to those who've stuck with it. Heroes? I don't even know. All the charactars and situations are ripped from popular comics. It's familiar and very easy to like. The pacing isn't deliberate or realistic. The episodes are NOT rewatchable because all the events are neatly cleaned up with weakly contrived exposition. They don't trust you to put it together yourself and they'd prefer to insult the viewer's intelligence rather than reward the viewer with an experience that challenged them.