The BIG is a lot better than you are giving it credit for.
There is talent in the B10. I’m not saying there isn’t. And the addition of the west coast teams certainly strengthened the top of the conference in terms of baseball. But the conference is still #4 in RPI even with UCLA running away with the individual metric.
It’s still primarily a northern conference geographically and many rosters are filled with a lot of northern kids who are talented and scrappy but aren’t at the level that ACC and SEC players are at. Sure, best on best (even at a player level), the B10 doesn’t lag too far behind the ACC. But there are 6 TEAMS in the B10 with a lower RPI than the worst ACC team (Stanford at #105). There were several series this year that UCLA was able to sweep without playing much better than their “C” ball.
Saying the B10 isn’t at the level of the ACC/SEC and that the gap is material isn’t saying all B10 teams and players suck.