There is a limit to how well a piece of copper can cool unless you really open up cool plate and add a shed load of micro channels. But the difference will only ever be a few degrees, that is why the difference between all the cpu and gpu blocks are so marginal. You usually see a few degree difference between the top tier blocks and the budget ones but the price will be vastly different.Apparently it has there biggest cooling engine to date, not sure what that will mean for actual results, gut feel not much over other models. That said does look like a whole hunk of metal there, so imagine that may also passively be able to radiate heat away from the card:
But as we understand with overclocking, the few degrees in difference can mean a stable overclock of say 2145 on the core and 2050 for instance on my 3090 if the temp hits 50c, the gpu will downclock itself to the next lowest tier.