in DC is have 5 category. just example pure dragon is was set to category 5 and nature was set to 1.
this list :
1 : attack :100, life :1000
2 : attack :150, life :1500
3 : attack :200, life :2000
4 : attack :250, life :2500
5 : attack :300, life :3000
for pure dragon lv 30 is :
3000 + 10%*30 = 12000
nature dragon lv 30 is :
1000 + 10%*30 = 4000
i just think attack power is from (attack base on dragon + attack base on move) + 10 %*level + 10%*star
any idea about that? if wrong please correct that XD