You'd be incorrect to assume that. The Musou games on PS2 have vastly fewer NPCs.

I thought the massive frame drops were proof of the opposite.

PS2 musou games  have lots of NPCs and it doesnt say anything about the power of the console, they're mindless and have very limited AI.

I'll leave these here.

Bladestorm The 100 Year War

Kessen 3 on the PS2. 

Kessen 2 on the PS2.

You see a lot more than this in these games at once, just can't find any pictures, so here's a link to Kessen 2 gameplay.

https://www.youtube.com/watch?feature=player_detailpage&v=YwzuAzYbg_g#t=343

PS2 GPU more powerful than Wii U confirmed?

The NPC count in the PS2 games is not even remotely close. The quality isn't the issue, sheer quantity is.

have you seen the earlier linked post, https://www.youtube.com/watch?feature=player_detailpage&v=YwzuAzYbg_g#t=343

Is PS2 more powerful? Look at all those NPCs

Also, we're all aware the Wii U is only a bit more powerful than last gen, but here's the amount of enemies Dragon Quest Heroes does, just as a comparison. This is the PS4 version, no idea if the PS3 will have that many on screen at once.

https://www.youtube.com/watch?feature=player_detailpage&v=s-3nwTJ5eL4#t=176

Hugely simpler setup. No environment to speak of, even more basic behaviours.

I meant in a matter of speaking, it's a newer CPU, so of course it has more bells and whistles. That's what I meant with optimized.

Yep, it really shows how the "developers" put a lot of effort into it.