Are the downloads for OS X updates different depending on the language?
To the best of my knowledge, the updates are not language-dependant. Certainly the documentation for the downloads support that:


  Supported Languages
  Deutsch, English, Français, 日本語, Español, Italiano, Nederlands, Dansk, Norsk Bokmål, Polski, Português, Português Brasileiro, Pусский, Suomi, Svensk, 简体中文, 繁體中文, 한국어, Albanian, Arabic, British English, Bulgarian, Croatian, Czech, Estonian, Greek, Hebrew, Hungarian, Icelandic, Indonesian, Latvian, Lithuanian, Macedonia, Malay Malaysia, Montenegro, Romanian, Slovak, Slovenian, Thai, Turkish, Ukrainian, Vietnamese


(from the 10.7.3 combo page).