I've never fought on a pure account, so it's hard to judge. However, there's a lot more to warring then just switching gears and being able to hybrid/tribrid. Even amongst people who've warred in the main scene for years there're still gaps in quality, as although it's not too difficult to learn, it's hard to master. If you really take all the skills in account that are required to be excellent at warring, then I think mains need a little bit more than pures. It's still comparing apples to oranges though.