It is unclear whether the image has actually been intentionally manipulated to make the Galacy Tab 10.1 appear more similar to the iPad, as some sources have suggested that Apple may have utilized an image of an early Galaxy Tab 10.1 prototype. Regardless of whether the image is obsolete or doctored, the German court responsible for the injunction is not likely to take kindly to the error when a full hearing on the matter is conducted beginning on August 25th.
I think it makes an ocean of difference. If Apple doctored the image, then it's a deliberate attempt to mislead the court.
If, however, Apple used an early Samsung prototype in their argument, it may have been done to show that Samsung had intent from the beginning to copy Apple's design, or used Apple's design and trade dress as a basis for tweaking what they came to market with. It all depends on the context of the photo's use.