You can do the math and figure out the effect of a given amount of bike weight on a particular rack anyway.
But in any case this is the Paceline, get better bikes to bring down the effective tongue weight.
Realistically this should not be a problem unless you're carrying fat bikes or eBikes.
I have a 3-bike 1UP setup and my Subaru does fine with our 3 mountain bikes which are all porky.
Road bikes it's like there is nothing on the hitch.