Wouldn't say it got easier, more that DE learned to not listen to people that know how to do damage cap or can kill lvl9999 steelpath enemies 1-2 rooms adjacent to the warframe.
Like the only way to negate that is to give said enemies a googolion health red health and than also give them 99,9^99999999% damage reduction.
Overguard was an interesting idea, but at the end it ends in do damage cap or get fucked