Question about the Grid

If we go to the Grid and sort the systems according to their annual return (highest first) here is what we see, as of 6:04 PM 2/22/2022 (New York time), depending on the market we select (Stocks, Forex, Futures or Options).

For the Futures market the highest annual return is 140502997401600.0%

For the Options market the highest annual return is 71232100.0%

For the Forex market the highest annual return is 133462.0%

For the Stock market the highest annual return is 16332.1%

But, if you click on ALL (meaning ALL markets combined) the highest annual return is…86.5%

How is that possible?!?

https://collective2.com/grid