The FirePack Exploitation Kit Localized to Chinese

The process of localizing open source malware, as well as publicly obtainable web malware explotation kits is continuing to receive the attention of malicious attackers, the Chinese underground in particular. Starting from MPack and IcePack's original localizations to Chinese, the FirePack exploitation kit is the latest one to have been recently localized to Chinese, and the trend is only starting to emerge.

What is prompting Chinese users to translate these kits to their native language anyway? Is it the kit's popularity, success rates, lack of alternatives, or capability matching with the rest of the internaltional underground community? I'd go for the last point.