This is like comparing apples and oranges, all is not equal with gear, seeing etc....Both scopes have there merit and disadvantages.
Just check out the spot sizes in these pages at Dream Scopes. Don`t really need to know any more.
The F/8 newt has the best spot size but geezs it would be a bugger to mount and weigh a heap compared to the RC, not real practical in most situations
http://www.dreamscopes.com/pages/pro...4/ccvrc-08.htm
http://www.dreamscopes.com/pages/pro...4/ccvrc-07.htm
http://www.dreamscopes.com/pages/projects-04/ccvrc.htm