There are people with more than that, slick for instance has 299 water T2 cores and 270 fire T2 cores, im only on 204 fire T2 as my highest but yeah there are hard farmers out there, dont limit things to your own experience, and with daily 100k gemcha + daily bosses, your T2 cores count shouldnt go down, im spawning 3 wrags daily now without any issues and my cores arent going down.