You know why it's so bad?
Here's the deal: The voice "actors" are actually mostly family members of one of the guys on the localization team. They're not professionals and presumably didn't get paid at any kind of rate that professional voice actors are paid.
The only reason the game even has an English "dub" is to get it approved for North American release. Chaos Wars has a dual-language option, and the target demographic is the American-subtitled-anime-watching-otaku crowd. In other words, the publisher knows that the people buying and playing the game aren't going to listen to the English dub anyway; they're just gonna switch the language to Japanese and get that full-on anime experience, so they don't even bother putting any effort (or more importantly, money) towards the dub.
It's a pretty sneaky but effective way of saving money on localization. Plus there's the added benefit of publicity from videos like this.
Anyway I've heard that it's a pretty good tactics-style RPG, so if you're into that kind of thing and want an anime-styled game, hit it up.