It depends how big your butt is. 20 inches is plenty of space for most people, and me. Because of the 60 inch pitch and the big console between you and your seatmate, your overall comfort is great and not at all comparable to a seat on an RJ, even one that technically has the same width.

CO has 22 inch wide seats in its 777 BusinessFirst, and 21 inches on its 767s. But with only a 55 inch pitch, one can feel more cramped, especially when the person in front of you reclines. However, if your width corresponds better with what CO offers you may be more comfortable overall with them.

I also noticed no difference in the width of the WBC seats in the 744 and the 332.

And if you suspect you're not comfortable, just take a walk through Y during the flight, especially on the 744, and your WBC seat will feel a lot better.