These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
In Name Only: It can be argued that the 2008 virgin comics mini-series changes the setting, characters and technology so much, that it is unrecognizable from the classic original series it supposedly follows. Of particular offense is a scene which suggests the original strip was dumbed down stories for children. Fridge Brilliance or Take That? Take your pick.
Let's not forget the 2000 AD stories. Dan was far more of a gung-ho bruiser who'd prefer to Kill 'em All then talk things out.
The New Eagle strips were about a completely different character with the same name, albeit a descendant of the original. That said, he was more like his ancestor than the original Dan in his later appearances.