a huge difference between a procedure design and performance?
I would think they are directly related.
I have worked out many, many missed approach performance profiles, for all kinds of aircraft, in all kinds of conditions, trying to balance weights, airport altitude, and temperature limitations...
on procedures, you get calls all of the time when the temperatures go up...
9.g..perhaps 5% eventually....I would not count on a 5% climb EO at the missed approach point, and the momentary descent EO is significant...