Sorry but I don't see a pic to check. The page title in the Tikipedia theme (version for TikiWiki 2 — be sure to use this version and not the one specified for Tiki 1.9 and older), is the normal font size, plus a strong tag, so I don't know what would cause it to appear larger. You should be sure to clear your caches (tiki-admin_system.php) between theme changes if there is some strange appearance.
Also I'm not sure what line you're referring to. Please post a link to an image or attach the image (I moved your post to the New Themes forum, which accepts attachments.)