I didn't really notice a different formation, but it was more adaptive. Also worth noting were the timing and choice of subs, as well as the movement off the ball which I thought was noticable in that it existed. That said, player attitudes were different too - Baker in particular
I think the atmosphere was a bit better, and the quality of opposition forced us to raise our game. Some players in the side have been coasting a little up until now, and tonight they proved they can perform at a higher level.