While those that put huge capital win more often, their losses are usually painful. On the other hand, those that commit small capital to make huge wins rare win but when they do, they win big; their losses too are less painful. There are other advantages and disadvantages for both approaches but for the sake of this discussion, let's know which approach you think is better and why?
It really depends for me how I feel about a particular bet and how much I am willing to lose on my conviction. In some cases the odds of winning are so high that it just doesn't make any sense to bet small. In the past I used to bet large amounts on the favorites on football match, even on leagues that I didn't even follow I bet on games with 1.05 and lower payouts. The problem was that in several bets the underdog won and I lost all my money. The amount of money you risk compared to your payout is so big that it's going to take month to recover any loss. Now I am trying to be more cautious, I still bet large amounts from time to time, but I also try to bet more smaller amounts. The good thing about high payout bets is that you can spread out your money across a large number of bets. Even if the winning chance for one bet is low, it's enough to win a few to cover the losses from the majority.