Squawk, the quote you are using says "abrupt". I can assure you, that I can achieve zero "g" in an aircraft with a gentle pull up to less than 45 degrees pitch, followed by a gentle lowering of the nose. In fact, I can quite happily do loops, rolls, and stall turns, outside loops etc (in an approved aircraft of course) without anything ever being "abrupt".
Also, you don't seem to understand angle of attack, I suggest you go back to the books on that one (hint: 55 is not a number you'd ever see associated with "angle of attack".)