there are striking similarities between kerala and west bengal .,
both house intellectuals ., educated people
people of both states are progressive thinking , so opt sometimes for left rule
in both places men are respected with an added word ., eta in kerala and da in bengal ., indicating/respecting elder bro
and ladies as chechi/didi
BTW you can not compare a state with one particular city., the question should be either WB vs kerala or tiruvananthapuram vs kolkata
my choice kolkata a city far far ahead of so many other cities in india ., but can not rescind god's own place., love munnar/palakkad/kochhi/tiruvananthepuram