Oh, certainly. I'm just pointing out that there's some possible room for improvement - mostly in terms of pacing & visual interest. For example, there are several points where, visually, it just sorta stops for a bit - the slowly fading white screen after the onslaught, the game title with glowy letters, a couple of other spots. Worth making any changes to the trailer? Of course not; with sound, it does work quite well. Worth maybe thinking about a bit, regardless? I think so.
This is intended as constructive criticism; I liked the trailer, but figured that just another "Awesome!" post would be less than useful. If my commentary isn't helpful, or isn't worth thinking about... well, feel free to ignore; I'll shut up now.
(For reference: No, when I watched "Up", there were no subtitles either. I had no idea what anyone was saying. The movie still worked. I was amazed. It may, indeed, be an apples to space shuttle comparison, though.)