Where did InnoGames post these categories?
Where did InnoGames explain that?
How do you know this? .Are you one of their employees?
That information was not expressly given, but was implicit in their explanation of the event on the official wiki. I've bolded the relevant parts.
Complete quests and get footballs in return. Use the footballs to choose a play and help our offense score! Different plays have different rewards and help you advance further on the field.
Your goal is to reach touchdown giving you the opportunity to win the coveted Touchdown Reward. You will need to go 80 yards in order to score a touchdown. Push your opponents down field towards your prize. To accomplish this feat, you will have to choose the best tactic to advance.
The rest of the information needed to analyze each player and develop that winning strategy was carried by the players themselves, the yardage of each would have to be observed on the field.
I am not an Inno employee, but I have played enough events (as have you) to understand the Inno business model (as do you) and how they use events to extract diamonds from players. I also know (as do you), that the information released by Inno is generally lacking, and I also know (as do you), that MUCH more information, including each event quest in advance, strategy recommendations, and numerical breakdowns of everything can be found on the fan wiki.
If you'd get over yourself, you'd also know that within 24 - 48 hours from the Forge Bowl event kickoff (see what I did there), there was complete information about all of this, along with answers to every question asked, including yours had you bothered to ask one.
You refuse to avail yourself of the plethora of informational resources available for every event and suffer negative consequences as a result. You then come here to complain how Inno screwed you over once again, then get pissy with the players who did use the information and had a positive outcome and experience. Sorry, hate to be the one to break it to you, but you have no one to blame but yourself.
I'm sorry you missed out on a level 10 Colossus, but it's your own continued obstinance that caused it, no matter what your complaint, or how often you offer it up. It was your choice to execute the event the way you did. That's on you, not Inno.