it does in the sense that the angled deck allows concurrent launches and greater/easier flexibility in concurrent recovery. Recovery is a moot point if you have a series of arrestor wires strung across its bum There is a reason why the USN designed carriers like the Midway and Forrestal and then kept on growing, they worked out the optimum size for concurrent launch and recovery in a high tempo environment to get "nn" aircraft to target.Having an angled deck is not really related to what type of JET aircraft are operated off it because all combat jets are likely to require longer runways on return from missions, hence use of arrestors.
they actually allow 3 (in real terms). higher concurrency and higher ripple rate. Faster launches also means faster clearance of the deck (by assoc) for recoveryEssentially what they allow is to have two decks on one ship to launch more aircraft.
stobar aircraft have inherent disadvantages against catobars on measurements like package form up, package to target, optimum cruise speed reached earlier, load out flexibility, thirst, range limitations etc.... so I'm hard pressed to see what real advantages they provide unless the navy who owns them has been decision bound by its countrys coffers.Ski-jump on the other hand only assists any type of aircraft being operated in the amount of stores they are able to leave the deck with, assuming a short deck. It just so happens that jets with vectored thrust engines can take greater advantage of this bit of naval architecture then other jets.
the main visible advantage of stobar is smaller real estate issues.
pay peanuts - get monkeys.