question about def,attack,dodge and hit ??

[bloodbath]

i looked to some similar threads (i hope i did not miss any..) but the question was not really answered though...
i was wondering how the relationship between the two categories of def-attack stats...

first is the def and damage ... as i saw from a some players some def are reaching 1k or more and damage from 150-200 ... the values are really so far apart..............
how much damage does 1 def really reduce??

second is the dodge and hit, hit can go over 100% while dodge as i saw can only as go as far as 40-50? i have not seen someone higher but as seen the values is also so far apart....
what is the percent to dodge an attack if for exampe i have a 40 dodge and he has 100 hit ?

im sorry im kinda new to the game .. from all the online games i played the stats here are really far apart ...