robots question

[Stormraven]

I'm trying to optimize my vbulletin for seo with robots.txt. But I just have one small question. I saw some robots.txt file contents that Redlinemotorsports posted in another thread, this is the contents of my robots.txt file:

User-agent: *
Disallow: /archive/
Disallow: /lo-fi/
Disallow: /general-announcements/
Disallow: /cgi-bin/
Disallow: /clientscript/
Disallow: /includes/
Disallow: /install/
Disallow: /sitemap/
Disallow: /tags/
Disallow: /ads/
Disallow: /video/
Disallow: /games/
Disallow: /partners/
Disallow: /printthread.php
Disallow: /subscription.php
Disallow: /payments.php
Disallow: /profile.php
Disallow: /member.php
Disallow: /memberlist.php
Disallow: /online.php
Disallow: /faq.php
Disallow: /calendar.php
Disallow: /private.php
Disallow: /sendmessage.php
Disallow: /sendmessage.php?do=
Disallow: /showgroups.php
Disallow: /reputation.php
Disallow: /report.php
Disallow: /threadrate.php
Disallow: /postings.php
Disallow: /newthread.php
Disallow: /search.php
Disallow: /newreply.php
Disallow: /register.php
Disallow: /login.php
Disallow: /faq.php
Disallow: /image.php
Disallow: /cron.php
Disallow: /joinrequests.php
Disallow: /usercp.php
Disallow: /vbseocp.php

but this is what Redlinemotorsports posted:

User-agent: *
Disallow: /forums/ajax.php
Disallow: /forums/attachment.php
Disallow: /forums/calendar.php
Disallow: /forums/cron.php
Disallow: /forums/editpost.php
Disallow: /forums/global.php
Disallow: /forums/image.php
Disallow: /forums/inlinemod.php
Disallow: /forums/joinrequests.php
Disallow: /forums/login.php
Disallow: /forums/member.php
Disallow: /forums/memberlist.php
Disallow: /forums/misc.php
Disallow: /forums/moderator.php
Disallow: /forums/newattachment.php
Disallow: /forums/newreply.php
Disallow: /forums/newthread.php
Disallow: /forums/online.php
Disallow: /forums/poll.php
Disallow: /forums/postings.php
Disallow: /forums/printthread.php
Disallow: /forums/private.php
Disallow: /forums/profile.php
Disallow: /forums/register.php
Disallow: /forums/report.php
Disallow: /forums/reputation.php
Disallow: /forums/search.php
Disallow: /forums/sendmessage.php
Disallow: /forums/showgroups.php
Disallow: /forums/subscription.php
Disallow: /forums/threadrate.php
Disallow: /forums/usercp.php
Disallow: /forums/usernote.php

But my question is, what is the difference between the two? do they both do the same thing? im trying to make google focus on main fresh content but am i duplicating things?