Merits should be included there, most of the managers are looking for merits because it serves as proof that you've done quality posts or something good in this forum.
Merits are inclusive components, that campaign managers will take into consideration, but merits and merit history are not determinant ones. People can abuse (buy, exchange merits for their shitposts).Hence, it always makes sense to glance at post history. With or without merit history, just take a glance at post history will help managers to have good overview on average post quality of applicants. I am sure experienced and professional managers will do this step.
Tools for managers to check quality of posts (both merited & unmerited posts)
since merits are hard to acquired, so assuming that managers are also looking for people that contains merits.
Here you go, it is your merit bar chart!