Did you ever think that a lot of people making these comments actually train, which is why they know what it takes to get to Ozil's level? When I started lifting, I also lost a shit load of fat and put on a lot of muscle in my first year. Then each year since, I've gained a little muscle but the first year is the most drastic change. However, the picture quoted above clearly shows that this isn't newbie gains - he has always been in the gym being an athlete. What we're seeing here though is another level.
No one said it's impossible, but to be as shredded as his picture is an incredible achievement. Maybe the lighting has something to do with it, but those shoulders in one year is insane - look at your 10 year old picture you posted, his upper chest and shoulders are non existent compared to now (and that was already with lifting).