Limited by the choice of hardware, overclocking results are also close. We'd hazard they would be on a £175 X570 board, too, as shunting 100-150A to the CPU is easy work for any decent offering.
Really, the differences between board potential, if they exist, can only be found with LN2 cooling, which is outside the remit of our tests.
The overengineering happening at all levels of X570 board design means that all examples ought to do well. You are paying the extra for looks, a particular feature-set, or enhanced RGB.