Ok so first off, I know what a GM reroll is, I just wasn't know what you meant by "max stat" because most servers call them either GM reroll or GM stat.
Secondly, the GM reroll you can get on this server is ONLY on accessories, no other gear, and even then it's not the max orange stat possible. Orange stats on goddess accessories go up to 30 and the GM stats on them are 25.
And last but not least, it is entirely possible to get very good (almost perfect) orange stats on your gear from RRs, you just need to spend enough time rerolling.