Taking the 5E rules TOO literally for interpretationw ith a game that uses precise modelling... thats basically it.
Someone else above stated: "... there are to many things effecting it besides what's normally taken into consideration by most DMs. A percentage is misleading simply because there's almost no explination as to why it's that way. .." - This is a highly accurate statement.
IN all the (albeit limited) DnD ive played a HUMAN DM will factor thing sout based on their interpretation, and probably err ont he side of being a bit more "fair" to the players.
A computer algorithm does no such thing.
I have been standing NEXT to an Ogre, on an ELEVATED position and been given a 4% chance to hit with Necrotic touch AND eldritch blast. How does this work?
THe miss chances are heavy. Im not quite finished with my first playthrough yet but I have combatted EVERYTHING so far just to try out the mechanic - and I put my overall miss rate at 66% or more... i miss sooo much on every character that it really boggles me. I have done more damage in fights with my Warlock going around hitting things with the Staff than I was with spells because I would miss constantly.
Interestingly as well - spells which have an AoE component OR thrown items with AoE do a FAR better job of "hitting" that anything else. I have noticed this with the NPC's as well. AoE such as firebombs and alchemists fire are absolutely devastating in this game and the strongest spell I have used has been SHATTER. It never misses and does huge damage compared to abilities like Eldritch Blast, Witch Bolt and the like.
