Studio Guitars Setup

Found some time yesterday to set up a few of the electric guitars at the studio.  WOW! what a difference.  The ’63 Hagstrom took about 10 minutes and it was perfect.  The Strat is never easy and took about an hour and sounds great.  I installed 9-46s on the Charvel so the neck had to be adjusted, but wow what a difference!  After setting the intonation it, it really sounds good and has great action!  Why do the Strats have to be so hard?