U hav a Point & a very Valid Point....
but U hav to understand a thing called WOM means Word of Mouth..
the Factors that U hav said were all correct except The Trailer factor..
The TRAILER was received well & Specially among Families & non Salman Fan's they saw it as a departure from Salman Masala affair...so the excitement was there.
Then it was Released on EID DAY which was a Holiday in Many Countries especially in Middle East a big Contributor of BOLLYWOOD Movies, plus this was Salman's Biggest Overseas Release...so Huge Opening was not something to be Surprised.....People were Surprised cz....Salman's Films had Opened well but not in Record Breaking style.....& Later say from 2nd daythe WORD OF MOUTH caught like a fire in a Forest....& rest We knw is a Beautiful History...which We shud cherish:-):-)