HVS knows it doesn't have the resources to compete with mega-projects like Gears of War, Halo 3 and Killzone 2. They don't stand to gain anything by investing heavily in the highly competitive HD shooter market only to get crushed by the latest Call of Duty release. So they targeted an audience which was cheaper to reach and underserved, where the kind of effort they can afford to make has a chance to get noticed and be a real success.
It's a smart plan. Let's hope it pans out for them.
Unfortunately, barely anyone fucking see's this, and thinks this its actually an attempt to outperform the highest quality shooters on the PS3 and 360. Maybe this is why some people wish this game to fail so much... nah, they just despise it because its on the Wii console, remember folks, if it's on Wii, its the enemy :/