What is the difference in capacity between Canon CL-41 and CL-51?

Answer 1

One person on another forum said the CL-51 has twice as much ink as the CL-41. All I could find after much searching was that in some sellers descriptions (the others had no number of pages listed, not a different one) the CL-51 was rated to print 330 pages and the CL-41 was rated to print 155 pages. I figure that matches very close with double the ink.