I think if you are in Legends League and averaging +280 or more per day on the offense side then you are beating the game. I got close to doing that consistently — okay, more like 240 to 260 with the occasional 280 day — in the days of zaps and super wizards, but now that those are nerfed I’m back down to the good old TH13 days of around +140 to 180 per day.