It makes sense for Sheldon to be the ultimate theorist chauvinist since he works with string theory, which is, so far, not of much interest to experimentalists because its so impractical to test! Salzburg is definitely a theorist, and it shows. The whiteboards may be correct most of the time, but the lab scenes are just painfully bad! All they really amount to is, "Hey look! Lasers!". Having a consultant around to check your white-boards is fine, but they should send the writers to intern in an experimental lab for a bit if they ever want to move past seeing the world through Sheldon's eyes.
P.S. I specifically watched this show because, when you tell people you work in physics, BBT is the first thing they think of. If there's a TV show specifically about your profession it's surprisingly awkward to be completely ignorant of it!