What you also probably had was a misinterpretation of what they were sparring for.
If they're working on technique and you go in blazing with no care to form (in your own words "shouldn't I try my best?") then while they're sticking to their self imposed rules you'll 'dominate' them.
Different situation, maybe they would've floored you. Maybe they wouldn't.
You're such a contradiction though, on one hand you say that boxers are the best boxers, but then you say that you as an ex kickboxer are better at boxing.
You seem to have wildly differing views that directly contradict each other yet expect them all to be true.
You say the coach has nothing to do with it, yet you blame the coach for training people who can't deal with you.
Nicely summed up.