Sort of like David and Goliath having lunch.
With slingshots or no slingshots? Seriously, once upon a time, CJ and ARC were direct tube competitors with each selling a variation upon a theme. ARC diverged from CJ once ARC started manufacturing balanced preamps and power amps. CJ has stuck resolutely to only making single-ended preamps and power amps and now there is a true distinction between their products.