I don't understand your problem =p The first graph shows on the left, difficulty levels, on top, the different types of variables, and then below that, it lists the variables themselves. How you read this information is up to you =p The idea is that you take this information, and then decide how much you need to add to/take away from your map to make it challenging.
For extra clarity, the first graph says that on difficulty level 4, there will be 3053 units of health to pick up for the player (including secrets and whatnot), 1378 units of armour to be had, 20974 ammo units to pick up (of varying types). However, 'Points' just plain baffles me
Afterall, Doom is played for the bodycount, not the highscore =p I suspect 'Points' are something arbitrary that the author of your program has explained presumably in some text file, that was packaged with your download =p At any rate, I hope that helps you out.