I would like to know why people are trusting their luck more in sports gambling compared to other type of games.
Personally, I put bigger bet on sports because I believe I have a little skills that would give me a better chance of winning, but I'm not really serious with sports gambling.
You itself have quoted the answer for your question. Big bets are done in sports betting is due to sports betting is done on analysis and reports and winning chances are high, even on low bets where you know what will be the result of your bets.