Re: How close should a comic book movie be to its source material?
The reason that people seem to think that the Batman '60s TV show and the movie were tonally incorrect is Neal Adams took over the art on Batman just a few years later and it got very tonally dark (the art work, I mean. The writing seemed darned similar in its speech patters, though I guess it lacked things like giant pool ball tables and giant pianos and so on). It's perfectly in line with Batman during that time period.
Punisher: War Zone was admittedly over-the-top and was basically a comedy. I enjoyed it quite a bit, though, and the ultra-violence isn't really out of character. But yes, if they pulled things back a bit it would be a "better" adaptation, in that it would be more accurate. But what we got was a very, very fun, entertaining movie.