You're going to offensive with Leon and popping supers whenever you get them. Use them when opponents are relatively squishy without a lot of burst damage potential (power 11 Leon can deal ~8k damage with 2 attacks but his health is a bit low, so avoid running up to assassins, tanks or brawlers with a method to get away [This is also why you died almost everytime you snuck up on an enemy in the Gold 1 match, both Griff and Brock have good burst damage and Brock's gadget helps him to run away]) Use the Lollipop Drop gadget and deploy it behind walls to hide your allys and deploy it and walk in front of it when using it as a shield. During the start of the match, go a bit passive and chip away at brawlers in long range until you get your super and sneak up on somebody, after this you can practically recharge your super again with one more attack and then repeat the whole process.