is this a joke?
First of all, leighbrunson, Having a POS movie like Battleship is not going to prove your point so leave that out.
Secondly, in the words of Andy Dufresne: "How can you be so obtuse? Is it deliberate?". Okay, maybe that a bit too harsh, but so is saying Sunshine is the greatest Sci-Fi movie this century. It wouldn't even rank in my top 20 of greatest Sci-Fi this century.
You say the closest competition is the high-budget mainstreams Avatar/Prometheus and the low-budget independent Moon. These movies, and Sunshine, are all Outer-Space related sub-genre's of Sci-Fi, NOT Sci-Fi in its entirety. so yeah, it is a massive stretch to say it's the best Sci-Fi movie.
Sci-Fi movies that are better then Sunshine:
Eternal Sunshine of the Spotless Mind
V for Vendetta
X-Men: First Class
Granted that some of these movies are comicbook adaptations, however they have been quite dominant recently; heck even the not listed Wall-E is a better Sci-Fi movie than Sunshine.
If you meant Outer-Space Sci-Fi, then Serenity and the latest Star Trek I believe are still better.
Although I'm not following Dojj Singh by going into super defined categories like "Teen Sci-Fi" or "Gritty Sci-Fi" (which, for a Sci-Fi movie, is a misnomer in its self). But Matt Glasby did say Sci-Fi and leighbrunson is stating Sci-Fi movies.. Matt Glasby didnt specify or classify his statement, so why should leighbrunson?
At first I though this article was bias; what does Total Film and Danny Boyle have in common... Britain. But the British Christopher Nolan's Inception? as a Sci-Fi movie Inception is much, much better.
Herein lies the key. Sunshine: "don't get too close to the sun - it's hot and it makes you nuts".
But hey, despite me trying to improve her movie knowledge, my sister's favourite movie is one of the Twilights.. so to each their own I suppose.