So this is not by a long shot the only piece of media to show the Twin Towers destroyed before 9/11; it's not even the only Marvel comic.
And you see a bunch of people acting like OMG HOW DID THEY PREDICT THIS or worse think it was some sort of message from "them" that "they" were going to destroy the Twin Towers
Here is the thing to keep in mind, before 9/11:
1975 - a disgruntled worker tried to set a fire in the towers
1981 - an Aerolíneas Argentinas airliner almost collided with the North Tower
1993 - Islamic fundamentalists set off a bomb in the World Trades Center, killing 6 and injuring over 1000
Plus, in 1945, a plane did fly into the Empire State Building due to inclement weather
And even besides that, many times have you seen the Statue of Liberty, the Eiffel Tower, Big Ben, the White House, or the Golden Gate Bridge destroyed by something?