Yes you are correct it is all in adjustment made by the right operator, but there are guys out here what can also set up a case,gleaner,jd,massey,cat all brands, who cares whose combine will out do the other guys, I am sure the other guy has his reason for owning the machine what he does. I run a 2188 and a 2388 and I will say your tr-98 wont put my machines to shame I will admit they are pretty evenly matched, I have a friend who runs tr-98 on the harvest and I have actually ran his machines before, just like any other combine they have good and bad to them. I will say a r-72 set up right will munch my machines and yours but they should be able to for they are a bigger machine same as the cat combine for what it costs and the size difference it should out do ours. Every combine has its good and bad in certain crops, I know I harvest alot of barley for budwieser and the farmers in my area want either my case combines or my buddies new holland, there is not very many deers running around here. They all say the rotor is the way to go, but I know you can set up a conventional machine whatever brand it may be to do just as good as the rotors will. I have heard caseih has a few problems in soybeans I wouldnt know because I have never harvested them so hats off to the other brands what dont. I know I will stick to the red ones because that is what we have always ran and we have been very impressed over the years so I see no reason to change a good thing, and all the people what feel the same about their brand of machines have the reason for feeling that way, bottom line all combines are good ones if they are maintained and set and run by the right person.