I have posted these once before here - they are far from perfect 'lab' shots but they show the rough difference in bokeh between a 5Dc/85_1.8 and my 40D/50_1.8, both at 1/3200, ISO100, F2. Clearly the 5D has way more bokeh.
You can't really have more bokeh. The OOF areas can be more OOF but that is not bokeh.
Bokeh refers to the quality of the OOF parts of an image... how smooth, creamy, uniform, etc. but there is no formal definition. Bokeh is generally (some may debate) thought to be a function of the lens, for example the shape and number of aperture blades contribute to the look of the OOF areas.