I don’t necessarily agree with the wiki:
“Each Glitch gun features dull green text on its weapon card: Error Code: OxLxMxAx. Each of the "x"s represents a number, ranging from 0-4 for Overload, Loop and Multi-shot, and from 0-5 for Amplify. The number represents the chance of the respective glitch occurring.”
Who here has EVER come across a glitch code that showed “5”? the highest number I have ever seen, I farm the hell out of TPS, is “4”. Show me a level 5 glitch code. Please 
“The chests where the Cutie killer and Heartfull Splodger are found within are occasionally already open in playthroughs where the weapons haven’t already been obtained. This makes acquiring the weapons in said playthrough impossible without third-party means.”
What?! This has never happened to me! And, I can only imagine the person behind such info may have been taken advantage of in a coop session. There are randoms that will join and take off in a different direction than the group or host for this matter. It is possible a random stole your Splodger or Cutie Killer. I don’t believe this at all from my own experiences. Chest don’t open on their own. uniques don’t vanish. Especially guaranteed loot chests like those mentioned in this post.
Not a fan of the wiki…