I love me some Zombie games, Dead Rising is definitely one of my favorites this gen as well, along with both Left 4 Dead games. It's just that there is an over-saturation of Zombies in almost every game, and in a lot of the games that have zombies in them, it is the least interesting or fun aspect of the game. So, if they focused on what makes the game actually good, and try to avoid throwing zombies at you for no real reason, they would probably be better games. Left 4 Dead's and Dead Rising are 100% committed zombie games, and they do it extremely well.
It's probably a product of me living and growing up in Los Angeles, where Pro sports and big market teams are the focus, whereas a lot of other people live in states and cities that lack Pro teams so there is more of an emphasis on college sports.