As you (and I, in reply to TTN's post) said, only the vertical acceleration determines total height attained. Vilord and I made that quite clear. The takeoff angle is determined by the resultant velocity which is a vector summation of x and y components of velocity. So as you said, takeoff angle is affected by entry speed (x), but that's not necessarily the main determining factor (talking about angle not height). The fact that every skater is going to try jumping upward doesn't mean that

will be similar for all skaters.
To nitpick, taking off will also have a y component acceleration (not just x) although its contribution to overall y velocity in competent skaters is less in proportion to the acceleration obtained by stroking during the jump setup. That's how people jump 2A or 3A from a standstill.
As stated clearly in my previous post.
We were talking about the *visual effect* of Tuk's 3A height. My point was that all 3As have a similar vertical height if their rotational velocity is similar, including hers. So she probably doesn't have exceptional height but neither is she below average.
TTN suggested the visual effect could be due to a steeper takeoff angle (which as you mentioned can be due to lack of entry speed).
Your point about the jump looking higher in proportion to her short body is also valid (might also explain Midori Ito's impressive jump, although Ito definitely had tremendous actual height).
Anyway, given that everyone has to finish the same 3.5 rotations before landing and the way parabolic mechanics work, the skaters who must be jumping higher (not just appearing to) are the ones with lower average rotational speed - either slower throughout (Yagudin?), or fast but have a slight delay (Hanyu?) or early check-out (Kolyada?)