First off, welcome aboard Bane.
Good questions -- this stuff can seem a little convoluted until it 'clicks,' I've found. The answer to your question, I think, is pretty succinctly stated on p14 of FAE:
quote:
If you’re creating a new aspect or discovering an existing one:
If you fail: Either you don’t create or discover the aspect at all, or
you create or discover it but an opponent gets to invoke the aspect for
free. The second option works best if the aspect you create or discover
is something that other people could take advantage of (like Rough
Terrain). You may have to reword the aspect to show that it benefits
the other character instead of you—work it out in whatever way makes
the most sense with the player who gets the free invocation. You can
still invoke the aspect if you’d like, but it’ll cost you a fate point.
If you tie: If you’re creating a new aspect, you get a boost. Name it and
invoke it once for free—after that, the boost goes away. If you’re trying
to discover an existing aspect, treat this as a success (see below).
If you succeed: You create or discover the aspect, and you or an ally
may invoke it once for free. Write the aspect on an index card or sticky
note and place it on the table.
If you succeed with style: You create or discover the aspect, and you or
an ally may invoke it twice for free. Usually you can’t invoke the same
aspect twice on the same roll, but this is an exception; success with style
gives you a BIG advantage!
Bottom line -- the complex situation is the tie. You don't get to reveal an opponent's aspect or create a new one for him/her or the scene, but you -do- get to create the Boost. The one-time aspect that gets invoked for free, but that then is gone. "Off-balance," "Temporarily blinded," "Shocked by the fact that Dr. Zoomba is still alive!" or the like.
Succeeding creates a brand new aspect you get to tag once for free, and that then sticks around after that for use with Fate Points. As you've noted, doing so with style provides the two free invokes, and leaves the aspect in place.
That help or hinder?