Shock is broken too

Here we are again, this time with a mechanic which has been nagging at my brain for some time now. It is shock. 

The concept si simple, when you get wounded you contrast your wounds with your shock resistance and then get a number you have to roll equal or over to survive the shock. The problem? It only works if the character has a Health stat close to their Shock Resistance. When the number of Wounds the character can withstand gets higher, they will suffer from shock far sooner than they should, as the number of wounds received would soon match and surpass the character's Shock Resistance.

The solution? Each health tier of the character (you know, Health's W/X/Y/Z numbers) would come with a difficulty number for resisting shock. They difficult y for each tier will probably be 2 for W, 4 for X, 6 for Y, and 8 for Z.