Why Simulate can't produce the same results?

[JS_9824412]

Refer to the screenshot below, I just read this Help section: it says at the end that "But when you select Stresses, Rotations, or Reactions you cannot obtain the same results." What does it means? The calculated results can be different by the status of output selections? 

[JS_9824412]

Refer to the highlighted words above, did I find a way to improve the speed of dynamic analysis? 

[JS_9824412 · Accepted solution]

These should be typos in the Help manual. And these are what they are, you have to accept them and move on.