I beg to differ, but thats your own opinion, I have a C3 with a 65mm and 105mm lens, they dont stack up as well to the 90mm f/3.8C (or 180mm f/4.5) I have on my RB67 (though pretty damn close), and both the C3 and my RB67 are not as sharp ( though one could never tell unless you printed larger than 11x14) than a Hassy 500 with a Carl Zeiss T* Planar 80mm f/2.8.
Course saying X camera is Sharper than Y Camera is a bit ambigous, since you can buy a Hassy with cheaper grade glass, as well as buying a Mamiya RB with high end glass.
End the end we shouldnt quibble about quality as cameras mentioned today Mamiya RB67, Hassy, Yashica, Rollei, Nettars, Mamiya TLRs, so forth are all going to deliver good quality. The main thing that differs between them is how you shoot, what feels comfortable for you, are you comfortable with a big tank, a medium MF SLR, a tiny folder, a light TLR, a heavy TLR. Do you prefer to shoot looking down, straight ahead (upside down? lol). Do you have the need to change out lens or will you be happy with a one-in-all package. These are kinds of questions you need to ask yourself first, if you were local I'd let you get a feel for most of the equipment I have, hell if you were local and wanted to go out shooting sometimes and had a roll of b&w I'd develop it for you to see the results. One thing I've noticed is yer not gona find too many people letting others hold their hassies or rolleis.