Why does ARM have 64KB Large Pages?

The ARM720T user manual mentions small and large pages. Since the ARM 720T requires a 64KB page table entry to be duplicated 16 times in the page table, why not place 16 small page (4KB) entries to mimic a 64KB page entry instead of using a large page in the first place? Duplicating the entry 16 times waste page table space and couldn't they've gone with a modified L1 descriptor to indicate a larger page or something like that?