You can look at this from a few different angles, If we're to ask ourselves which is the better console to buy today or in the future, counting late ports, and ignoring generational exclusives, the Switch and a few other systems would beat the PS2 comfortably, maybe unless you count backwards compatibility with PS1. Because many if not most classics have been ported and improved on modern consoles. But this wouldn't really be a fair comparison.
When you play DMC1 or MGS2 today vs when you first played them in 2001 are completely different experiences. The PS2 had a mindboggling leap in graphics technology and gameplay. It was also the first console to standardize dual sticks, the last groundbreaking hardware feature.
Frankly, Switch's 3rd party exclusive library is very weak even when compared to older Nintendo systems. Not Nintendo's fault, it's just the state of a an increasingly multiplatform industry. Even Playstation's 3rd party support sucks if exclusivity is the sole metric.
To put things into perspective... The PS2 had 7, and I repeat, SEVEN exclusive Shin Megami Tensei games. Basically, SMT alone puts PS2 well above the entire Switch 3rd exclusive (even when counting timed exclusives like Monster Hunter Rise) library as far as A-AAA games. Fortunately for Nintendo, their first party games can't be played outside their own systems, and this saves the Switch from an exclusivity standpoint and keeps it unique with a strong identity compared to modern consoles/PC.
PS2 had a very large quantity of quality games that you just couldn't play anywhere else, not counting PS1 games via backwards compatibility. And this is what differentiates it from anything that came after. But in the end, it's a product of its time.
