12102 is super deluxe whereas 12101 is only deluxe only difference between them is one departing from ltt other from hwh do IR want to add word super only if train is departing from howrah..
Well the difference between them both is best known to railways. I'd just updated the train name as per official 'Indian Railways' website & I don't think updating train names as per official website of railways might be marked 'Void' or 'Wrong' Thanks!
It used to be called as Super Deluxe when it had all AC coaches in it's CC. But now it has become a normal SF Express, even in the TB they are not using Super Deluxe tag.
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