Nobody, ever, in this thread claimed that. It was you people who started these "N64 is for casuals" claims.
It wasn't claimed that the N64 is only for casuals. It was claimed that it had a more casual focus, and it did. When people think N64, they'll likely be thinking Mario 64, Zelda OoT, Mario Kart 64, GoldenEye... games that are easy to pick up and play. When the topic shifts to the Saturn, it becomes Virtua Fighter 2, Sega Rally, Panzer Dragoon, Guardian Heroes... games that are designed from an arcade mindset, and are far more difficult for the average player to play proficiently.
In what way? You just claim something without explaining yourself. Have you ever played F-Zero X? Have you ever played on Master mode? Have you ever tried the Staff ghosts? By the way, i played all these games, i'm into futuristic racers.
Wipeout has a very momentum based handling system that requires extremely delicate care to control. Despite the more difficult handling model, Wipeout combines this with narrow, snaking tracks, causing most new players to simply pinball their way around them before quitting in rage. This is not the case at all with F-Zero, where the handling is a much more traditional push left/right model, on wide tracks that are generally easy to navigate. F-Zero's challenge comes from other aspects of its game design, but it is far more approachable to a casual games player. And yes I have played it, and GX, and every Wipeout.. along with Rollcage, Extreme G, Hi-Octane, Quantum Redshift, Episode 1 Racer and nearly everything else that this subgenre has offered. I didn't attempt F-Zero X's staff ghosts, but have beaten nearly all of GX's if that helps.
WHY? You never explain yourself. Well, lets see... One is a non-linear, mission focused game, with multiple ways to play it while having some stealth elements in it. The other is a shooting gallery with the only challenge being the level design. Guess which one is the more "hardcore"...
I did explain. Both GoldenEye and Perfect Dark provide extremely generous amounts of aim assistance to help those that would otherwise struggle with FPS controls. GoldenEye goes even further, preventing you from falling from ledges, to help avoid frustration for those that struggle to both aim and navigate at the same time. The level designs have less focus on verticality, enemies are rendered mostly ineffective after being tagged with the first shot etc. More ways to complete a level does not automatically make something more hardcore oriented.. else GTA would be more hardcore than everything to release in an arcade, ever.
Also I know Quake and Duke are also N64 games... which is why they weren't in my list. I'm just saying that C&C also shouldn't be in yours.