Forum:Resolution at the same time

Hi folks, i read a ruling from Major Riot. I have a doubt. why put this ruling?: "The resolution of "Return all Monster Cards on the field to your respective hands." and the resolution of "Both you and your opponent then Special Summon from your hand the same number of Monster Cards on the field in face-down Defense Position" are not treated as occurring at the same time." Someone explain me?, i search and this is not same like "SEGOC" ruling, what is the diference between the resolutions ocurring at the same time and the diference if not?. Example.

Sorry for my english. --JDDCODE7 (talk • contribs) 23:17, August 2, 2016 (UTC)