It did help Nebraska.
We cannot get recruiting classes prior to 2001 but Nebraska under the Big XII brought in a Top 10 class that included Suh and 5 star RB Marlon Lucky.
Most of this class made up their 2009 team.
Problem for Nebraska was that they were too late to the party.
I can go on an on why Nebraska did not compete in the Big XII.
The best years of the Big XII were from 2006-2010.
Top to bottom.
Only team that was really hurt by the Big XII was CU.
The Big 8 survived off of California recruits especially Colorado.
Once these recruits started going other places in the late 90’s CU looked towards Texas
Colorado did well in Texas but Texas recruiting is a Gator pit.
Nebraska recruited Texas well but they never did get Top 15 players out of Texas like Oklahoma could.
What hurt Nebraska more than anything was that programs like Kansas St and Missouri grew.
Missouri took a little while longer because Larry Smith with his USC connections attempted to recruit California.
The Oklahoma schools were and still are the only former Big 8 schools to be able to recruit the top Texas players.
The biggest issue for Nebraska was their athletic spending in the early 2000’s
You again say completely contradictory things.
Nebraska brought in Top 10 recruiting classes when they were in the Big 8. They won two freaking National Championships before the Big 12 was formed.
Nebraska's 2009 team was 10-4. Not exactly dominant. In fact, that would be the only year that class won 10 games. Not anywhere near as successful as they were before. Again, your claim is that Oklahoma, Kansas St., Oklahoma St, etc. all improved by being in the Big 12. Nebraska should have as well, if your theory is correct.
You then turned around said the Oklahoma schools were the only Big 8 schools that can recruit Texas. Ok, so then how does the Big 12 help Kansas St, and Missouri? If they can't recruit Texas, then the Big 12 does nothing for them.
You also still haven't demonstrated how the SWC was "100x" better than the Big 8.