Apparently you've misunderstood my meaning. When I say "rivals DOOM 3" I know what DOOM 3's engine does, and I've stated that it's far more technically advanced... And that's nice and all, and is a great leap in technology, but unfortunately id hasn't applied it to as good of a use as a lighting engine of that calibre deserves... What I mean is when you toss all that out and just look at the end results on your screen, RE4's scenarios look more impressive. Most people aren't going to notice the tiniest shadows and flickers in a small dark DOOM 3 hallway and be like "holy crap! those shadow physics are awesome!" but when you look at the far more artistically awe-inspiring scenes of RE4 the end result is far more impressive.
Of course, if the DOOM 3 engine was applied to RE4 the game would look even better... but it's not. I'm not comparing which lighting engine is more technically advanced, I'm arguing about which game looks more impressive. And I don't think anyone is going to argue that the fire effects in RE4 beat everything down. I mean I was impressed when I played Far Cry for the first time, those explosions and such were amazing... Half-Life 2's Source engine didn't produce any fire effects worth talking about though IMO, not even on DX9c compliant cards. But RE4's fire just looks freaking amazing, and something I didn't think the little GCN wasn't capable of producing. And something the PS2 will definately NOT be able produce with a mere port team and a few months, if ever.
And the textures in the game aren't exactly high-res anyway, downscaling them will make them look ever worse. The poly counts of course will but cut too, simplify special effects, of course. Now that right there already makes the game look that much worse. Then factor in the PS2's inability to produce as sharp or vibrant a picture, and very aliased and jaggy images, and there goes the clean look of the game. And even after all this I doubt the frame rate will be steady. Anyway I'm not sure what you're arguing about. I'm sure anyone would agree that under the conditions that the PS2 port is being subjected too (main team not involved, few months of dev time, PS2 hardware) that there's no way the game will look as good or run as well as the GCN version. And we all know that dev teams matter, look at NFS Hot Pursuit 2 on PS2 and the versions on Xbox, GCN, and PC. All three systems way more powerful than a PS2, but all of them looking pathetic compared to the PS2 version, and on top of that, running at pathetic frame rates.