In other words, they're telling you that they can change any of the numbers, later, and you have no grounds for complaint - sounds just like the mythical megacorporation on an old tv show, called "Wesayso" (the Corporation, not the show). What an excellent way to maintain that revolving door of contractors!
And 'cherrypicking'? If loads are turned down because they aren't profitable, (businessman first, remember), then the loads would seem to be the problem. Calling folks who refuse to make a profit for the carrier, at their own expense, 'cherrypickers' shifts the blame to the businessperson who has every right to make decisions in their own best interest. How about putting the blame where it belongs: on the carrier that booked the load? If they can't find anyone willing to take the load, they ought to be looking at factors other than the drivers, IMO.