Size is only a factor if a fighter knows how to take advantage of his. Andy Lee has great skill, but he does have a hard time keeping a fighter off of him in order to have space to work. Andy can push/paw with the jab too much and it costs him, he's eaten loads of punches coming right over the top of that jab. Now, he's been on a bit of a run here recently, maybe Adam Booth has his confidence back at a high level or something, but he's shown well in his recent fights. I don't know much about Saunders other than he had a close fight with Eubank Jr. For Saunders to win he'll have to keep his head moving, keep Andy backing up, and be wary of the massive counters Andy can throw.