The phrase "various stats" refers to different types of statistical information or data. It means there are multiple or different kinds of facts and figures being considered or compared. Full definition
These stickers will grant various stat boosts to aid you in battle. (indiehangover.com)
You can briefly upgrade various stats of your cars after each race during the championship mode, but those changes don't hold over afterwards. (darkainarts.com)
You have to balance out your different types of buildings to keep demand for them from dropping, and you need to level up various stats to keep the money rolling in. (pocketgamer.biz)