It was generally agreed (paraphrased from AlGore...) that the early jets were probably the most demanding era of Naval Aviation from a flying point of view.
All of the eras are different. During the war (#2) the experience level was not generally high due to the demands of the fleet for more and more pilots. A loss rate was acceptable. My dads training class lost about 5% from accidents (killed), which was typical. The Korean aviators were mostly experienced WWII types, though the Carrier flight operations were still in development without a lot of "aids". More is capable today, as it true in many facets of aviation.
I fly with a lot of Marine and Naval Aviators and they are certainly skillful, but no more so than many that have made a career in aviation and perhaps have started out as someting more arcane as an Alaska Bush Pilot. What it does take is really good training and then experience. A friend of mine used to be a LSO, he said that about the only way he would give an "OK three wire" was if it was a single engine approach at night in a storm.....
The sort of thing that gets a bit more challenging on a bad day.... and always requiring your full attention.
Cheers: T