I'm not saying your resources are bad (or at least I wasn't, I'l come back to that in a moment

), I'm saying winrate itself is a fairly meaningless statistic as winrate does not correspond to stuff being overpowered/underpowered/balanced in the slightest. Far too many things factor into winrate beyond the question of balance. Something as stupid as "the counter-strategy just isn't popular cuz it's boring" can already result in massivly inflated winrates. And similarly 1 faction being overrepresented can lower it's winrates to roughly a "balanced" 50% as it'l end up fighting itself more often (thus gaining both a loss and a win for the statistics).
Just look at some of the weird winrates in the list from thehonestwargamer, there's several currently completly unsupported armies in there that apparently achieved a "balanced" 50% winrate, and the 2nd highest winrate is for Phoenix temple only 1% behind the number 1 faction (DoK). So a faction with 4 models, no allegiance rules, no artifacts etc., no battletome, containing only melee troops and having no wizards is somehow the 2nd best when judged according to the winrate according to thehonestwargamer. Either the few things they do have are increadibly overpowered, or it just so happens that the 3 players playing Phoenix temple (out of a total of 1399 different players) happenend to be good and/or Lucky....
Also, coming back to the resources being good, the actual source is flawed, it's only looking a the relativly high level tournaments. Which 1) introduces a massive selection-bias as you have a relativly skilled playerbase that abuses every advantage they can get their hands on and 2) introduces statistical problems as the sample size is far too small for quite a lot of armies (see aformentioned 3 Phoenix temple armies..)