I also have real issues with Alan Moore's attitude. He's not the end all be all of the industry that he thinks he is. Gaiman, Ennis, Ellis, Miller, etc etc... so many other, profoundly good writers out there that aren't known primarily for being bitter about the industry and self-aggrandizing. He's no Art Spieglman, he can get over himself. His whole 'disavowing himself of every movie based on his comics' ticks me off as well. It shows a real...I dunno, arrogance...to never want to see someone else adapt your work. And a lot of those movies are quite good.
And, bringing us back to the original topic (while still talking about Alan Moore), I actually thought the ending for the Watchmen movie was far superior to the ending in the book. The book ending was....I dunno, sort of lazy...kind of arbitrary? I dunno. The movie took the obvious callback that made the whole thing fit together so much better. Not that the movie was great, it had some serious issues, but the ending was far superior.
Also....fwiw....Powers is probably 10x better than Top 10.