For someone who isn't a comics fan, it's pretty good
I never got into comics when I was a kid - well, apart from The Beano - so I've never "got" the appeal of them.
However, having enjoyed the Iron Man fillums, I gave the Marvel app a go on my iPhone and tried out the free Iron Man comics, and was pleasantly surprised. The way the app guides you through the story - panning and zooming on each frame - makes the reading experience so much better than just a flat paper comic. With a paper comic, the whole page is right there in front of you - it's easy to accidentally spot what's happening to the main character three panels down, before you've even read the current panel, thus ruining any suspense; with the app, you get to appreciate each panel before moving on. There's a greater sense of suspense and anticipation; much like with reading a book. In fact, I'd liken the Marvel app to a cross between reading a book and watching a movie. I really didn't expect it to be much cop on such a small screen, but it worked just fine.
It would have been nice to see the article go into the actual reading experience of each app a bit more; does the DC app work like that as well?
Also, weirdly, there are plenty of recent Iron Man comics in the Marvel app - up to 2008 - and also other series as well, like Wolverine. Not sure why the authow would say there aren't (and they were there at the beginning of May).
Anyway, just like book fans who want the "feel" of a book will never buy into E-readers, comic fans will never switch over to reading on an iPad.
But for anyone else who just wants to read a story, and doesn't care about having actual paper to worry about, then reading comics on an iPhone or iPad is actually quite a pleasant experience. And you don't even have to go into a comic book store to buy the next issue!