Originally Posted by
HillRider
I'm not sure that's a valid comparison. Hand built frames are more likely to show dimensional variation than those built by modern machinery, no matter what the price. Obviously Wal-Mart bikes are machine built and the tolerances are likely to be pretty poor but any "big name" bike-shop quality volume builder probably does better on average than a small shop artisan.
I think you're being overly optomistic. In theory mass producing BB30 bottom brackets (without a requirement for plastic inserts) should then have produced frames with no issues. But thats not what happened.