It's a bit difficult for me to understand what Op is trying to say... Maybe because I am not too familiar with sport-betting and it's terms. From my little understanding, it seems easy-to-predict match have smaller prizes while the difficult ones have higher prizes? If that is the case, I will go for the easy matches. Will probably need lots of skills and information before trying the difficult ones.
Matches with low odds are not always easy though. Sometimes you don't need much skill or information to pick the difficult ones imo you just need to follow a strict bet size if you're going with the underdog.
You can analyze the playing before bbeting or if you are a long time sports bettor then you must know how to play the games. WhatI hate is those odds that are sometimes in favor of the losing team like 2.76 for the losing team and 1.24 odds for the winning team, if luck plays out well and you are betting on the former then good for you, will earn a lot but if not then you will have miniscule profit which is sometimes beneficial to the gambling site. Just to be clear I love sports bet but I hate the booker scheme
That's just how things end in certain sports there's really no clear favorite or just the underdogs performing better than expected. I mostly get these kind of experience in tennis so I avoid them but if I can't resist skipping a good value i'd place a small bet. Also it's not just small odds that are beneficial to bookies probably any bets they offer are profitable to them.