Mark Wahlberg Sorry for Dissing 9/11 Heroes

Mark Wahlberg is apologizing for saying he could have rewritten 9/11 history, fighting off the terrorists on one of the flights ... and safely landing the plane -- telling TMZ, "To suggest I would have done anything differently than the passengers on that plane was irresponsible."

Mark originally made the comments in an interview with Men's Journal, claiming, "If I was on that plane with my kids, it wouldn't have went down like it did. There would have been a lot of blood in that first-class cabin and then me saying, 'OK, we're going to land somewhere safely, don't worry.'"

But Mark admits he crossed the line -- telling us, "To speculate about such a situation is ridiculous to begin with."

Mark adds, "I deeply apologize to the families of the victims that my answer came off as insensitive, it was certainly not my intention."

HERE is Mark's comments from earlier : Wahlberg just gave an interview with Men's Journal ... in which he states, "If I was on that plane with my kids, it wouldn't have went down like it did. There would have been a lot of blood in that first-class cabin and then me saying, 'OK, we're going to land somewhere safely, don't worry.'"