illogical Ex mp prices

Ex Mp: +140 Mp(252 Avr Max) +56% Total Mp
1 Def

Ex Hp: +140 Hp (700 Avr Max) +20% Total HP
5 Def
20x 2.8= 56
Hp is 2.8x better than Mp if they had the same value
2.8x 5= 14

14 Mp= 1 Hp According to value
70 MP= 5 Hp According to value
Wait a minute that would mean O_O

14 Mana = 1 Life

Ok but you get 3 life in the tomb of the ancients so
Tomb of the ancients must be 42x harder than ocean trench.