It just depends how you play, how well your game fits you. Hayden has only been done lbw 5 times in his ODI career. That's a direct result not of his height, but of his reach. Hayden often bats out of his crease and he stretches well forward on the front foot. His figure obscures the stumps and it becomes difficult for an umpire to judge where the ball would be at the crease.
Nevertheless, of the top ten Test run scorers, the tallest is Gooch at 6 ft.
I suppose we're dealing with a complex sample, because of the variance of height as brought on by genetics. Only two members of the Australian Test team are below 180 cm (in truth, the team is tall compared to the population; Clarke and Ponting are average height for Australian males).
Comparatively, the average height of Indian males is 165 cm. Again, you'd figure the team is taller on the whole, but is their best batsman taller than or shorter than the average height?