I'm positive. It's the numbers wikipedia cites, and seemingly other Disney websites with "ride facts" (including this one). But they are definitely wrong. I've analyzed both versions of the ride and counted the AA's several times.
Disneyland by my count has 70 animatronics. WDW I counted 60. It's plausible I missed one or two figures for each, but I was quite thorough and there's definitely not as many as 68 for WDW, let alone 100+ for DL...
I didn't count anything that was a static prop. Like the turtle being used as a drum by another porcupine AA. I also didn't count the 5 prairie dogs in the Laughing Place scenes (which are at both DL and WDW). They aren't animatronics, just static props that pop out of the holes as boats pass. No motion otherwise, even the prairie dogs in Living With the Land have more movement.
68 is at least slightly closer to the actual number for WDW, but still off by 8. The 103 number i'm seeing cited for Disneyland is just ridiculous. I have no idea where it came from but it most definitely does not have anywhere near that many.
If you count all the fish on a stick and all the fish glued to a wall, the Little Mermaid ride has 200 AAs!!