First let me say that it has been a couple of years since I have posted on CBM. It's a fun site only partially ruined by the slavish devotion of fans to one brand or another. It's that mindset that inspires me to compare the two biggest "outer space" movies from Marvel and DC.
Green Lantern was poorly received by the majority of fans and was torpedoed from the get-go by persistant online trolling, giving almost no credit to what the movie got right. In contrast, GotG has been a success with positive fan support, despite the many things both movies have in common and the many things GotG got very wrong. For examples...
Ryan Reynolds and Chris Pratt were both very good in their roles as brash space adventurers. Reynolds portrayed a light hearted and sincere daredevil pilot-cum-space cop. Pratt played a light hearted and sincere space pirate. I really liked Pratts first few scenes in GotG.I felt he was the strongest defined and acted of the cast. I am not especially familiar with the GotG comics.( I'm 44 years old and though I do love comics, and always have, real world economics have made actually buying comics every month a burden instead of a pleasure. It wasn't like this as a boy and teen, or even as a younger man. then...WHOOSH!...comics became a pricey priviledge. Thankfully, trades are now widely available for us old-timers.) Visually the Star-Lord character is nearly perfect. Seeing him in his helmet, using gadgets to explore, being brash and obvisiously enjoying his life, I thought of Han Solo, which is as good a template for a space cowboy as any, and i saw the very big possibilities of a Booster Gold film if it followed a similar template. It was really good to see a hero, or outlaw-turned-hero truly enjoying himself.
This is the glitch I have in relating to other comic-movie fans...the very thing Pratt portrayed well was first portrayed equally well by Ryan Reynolds. Reynolds' Hal Jordan enjoyed life, women, and pushing the limits, taking big chances, and being a wise guy. Same darn thing as Pratt, yet Reynolds was skewered and Pratt celebrated.
There was a lot of criticisms of some of GL's cgi. I am not an expert on these things but in GotG, and I think this will be more glaring when people can own the DVD, there were multiple scenes of really shoddy looking cgi as well.