his hp went up by 90 at lvl 18
his base hp went by 5 because you don't care about it
mordekaiser has the strongest 2v2 in the game, he's the only champion that can dish out more than 800 damage in a fight at lvl 3 and half of that in AOE
let alone that marksmen will deal less damage to him while he will deal more damage to them with the minus 4 mr that was repeated a lot of time by rioters in dev corner, and that leads to a more powerful mordekaiser
95 more hp at lvl 18 is not nothing on a champion like morde, the champ by default that shields constantly (depending on his hp) heals and keep dealing damage
you need to understand that +95 hp IS NOT THE SAME thing on morde than on alistar who doesn't give a fuck about that
and 95 more hp + 5 more armor in early game is definitly as good as other champions, especially since that going from 20 to 25 armor is not the same than going from 25 to 30 armor (the later is worse damage reduction wise)