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Early CN was padded with Hannah Barbera and Warner Bros tablescraps.
If you cut out all the filler you're stuck with Dexter's Lab, Johnny Bravo, PPG, Courage, EEnE, KND, and Billy & Mandy. Depending on where your threshold for "new" CN begins, I'd say they're on equal terms.
New CN only seems like it has less shows because they replaced all their midday filler cartoons with TTGO reruns.