This trophy was simple to earn, I was a little shocked.
First thing first is the Arcade Daily Leaderboard is the daily board. To do this you'll need to unlock the main arcade board (By beating something like 500,000 on the starter board), and then on the main arcade board earn 1.2 million which is hard. Focus on keeping frenzy, and completing as many levels as perfect.
Once you have that you should have a decent set of skills, which you'll want to use on the Arcade Daily Grid. Play on that and at the end your score will be added to the leaderboard.
Now unfortunately your score will NOT appear on the world leaderboard, so you won't know what your score to beat is, however turning in a poor time, was enough for me. As the day progresses I'm sure you'll need to turn in a better or a better score.
If you want the easiest way to get this, run this right after the roll over, when the scores reset. You earn the trophy at the time your score is added to the leaderboard NOT the next day, so you'll be able to earn this easier at the beginning of the "day".