What is so special about Guinness DRAUGHT? I haven't heard a lot about the DRAUGHT (Guinness) in terms of its taste. But my brother insists to say that DRAUGHT is the queen of the Guinness. 

But I found nothing special, indeed, I find it rather too watered down.

It is worth the hype or just a fad?
Guinness Draft is an Irish Dry Stout, a session beer, with alcohol by volume at 4.2%. It is intended that you can sit and drink several pints without becoming overly intoxicated. Compare that with Bud Light, which is 4.3%. Guinness has much more flavor than Bud Light, or any other similar American Light Lager beers.

If you compare it with Guinness Extra Stout (5.6% abv) or Guinness Foreign Extra Stout (7.5% abv) or any Russian Imperial Stout like Victory Storm King (9.1%) or Stone RIS (10.6% abv), then, yes, it will taste "watered down" by comparison. But you would be comparing apples with watermelons.