It seems like Rev thinks it can't be a lore event if it's ALSO mind-blowingly cool and would not be out of place in an action movie. The two CAN mix.

Seriously, if the trailer showed Grom shooing Trolls and Blood Elves out of Orgrimmar, you would agree that is lore, right? But it's no less significant an event than Thousand Needles getting utterly flooded, or Auberdine being razed to the ground. These are also events which have long-term ramifications -- they just happen to be particularly flashy, as well.

The Cataclysm itself will be in the history books just as the Troll Wars, the Birth of the Lich King, the War of the Three Hammers are. And we just watched a cinematic detailing it -- one of the single most monumental events in the past five years.

I would agree with you on the zeppelin being tossed into a nearby building. That's not anything except a flashy explosion. Pretty much everything else is an event, something which matters and killed tons of people, or altered the face of the planet forever.