300000 stars in 4 hrs??

I'm not sure. I saw a few on reddit state this, but none have stated they're offline. I know going offline is a strategy some use to not let competitors know of their score.

Yeah, a lot of people made new accounts for this competition.

someone posted its physically possible to get around 200k an hour and that's aabout how much I get an hour as well if I focus and nonstop play. I do it at night but during the day I slow down a little bit cause of life. But overall when my husband is home and he takes over, I strive for the 200 k an hour

Lower levels are no where near as easy as when you likely first played them. 2000-5000 has a massive amount of near impossible levels. Most people would be in that range so they are not getting an easy ride.

Also the difficultly of a level is not as important as you think. The people who will win the 10 spots will be spending quite a bit of money on boosters completely negating the difficulty, the mechanics of the level are more important.

Also it is not really about passing levels super fast, it is farming the levels that have lots of purples then blowing through the useless ones.

Basically being at 14900 means almost no different than being at 2000 for these knockout rounds, beyond literally running out of levels to play.