Actually all here is possible without cheating, if i take my gear and ninjas off in highscores i will still be ranked by my highest power EVER not by current but when people inspect me they will see my current stuff.

Also the ranked thing is common knowledge, i guess you are on new-ish server so you guys not figured it yet, the team you attacked with last is saved as your defense team, even if you change mains after, you will still be your old main in fights for when other players attack you. It's useful for ninja exams if you need to switch mains for a day, then just don't do ranked that day and you won't have to remake your teams or loose ranking cause your normal teams don't work with new main.