The Third Stage kicks almost everybody's butt... That's one that takes some practice.
200 the first time out, with no prior experience, is nothing to be ashamed of. (I've seen 400+ scores...)
One of the fellows we've hired to run classes for club members, an IPSC shooter named Larry Brown, shot his first IDPA match with us, shooting a Glock .45 that he had NEVER SHOT before. First IDPA match, first time with the gun, and he still shot Master with a lot to spare.
While he doesn't shoot the smallest groups I've ever seen, he has absolutely no wasted motion, no misses, no mental errors, phenomenal technique, etc., etc.