The reason Chronic>>>2001 was because Chronic was basically a Snoop Dogg album

[OG Hack Wilson]

Chronic over 2001 easily.  From what I've seen in the past, it depends on where the listener is from and when they got into hip-hop.  Not always, but a lot of times people that prefer 2001 over the Chronic either think Eminem is the best the best thing since sliced bread, or they are younger and got into hip-hop later. 

there were filler tracks on 2001, so that automatically makes it worse then Chronic

and 2001 was all one-song-samples and the original Chronic had several multiple-song samples