As far as I know there isn’t a blind tasting as part of the exam at level 2, there is one at level 3 - although its been a while since I have taken the exam! The exam is 50 multiple choice questions which I didn’t find too tricky but it does depend on if they focus on a subject you aren’t comfortable with, usually 2 answers which are definitely wrong with the other 2 being close.
For me I didn’t really take the WSET levels to get any sort of qualification it was more about learning about wine more and enjoying the learning experience. For me I would see it as:
WSET level 2 - good grounding for all the main regions, quick a bump if you know nothing about wine - set aside a bit of time to understand any more complex bits but most are fairly common sense
WSET level 3 - builds on the grounding of level 2, more indepth and specific for regions (such as knowing the Beaujolais crus rather than just Beaujolias), other wine styles etc - set aside a good amount of time to learn this as it is quite complex
WSET diploma - not got to this level yet but it takes 2 years to get through with many different individual modules you have to pass on their own - very in depth and would include individual sub regions, history, viticulture etc - pretty much full on learning
MW - A lifetime of work
For me I think I might stop at level 3 as it give a great basis to wine, gives me enough knowledge to further my own wine journey and I can apply what I have learnt to other situations, especially useful when looking at the next wine to buy or to match food with wine. I think at diploma level it gets far more serious, I have some of the books from the course from someone else who is in the process of taking it, to be its very interesting but unless in the wine trade or wanting to become a buyer it is at a level that is above just day to day knowledge.
Looking at the WSET site it shows the levels in terms of study time:
Level 2 - 28 hours of study including 16 hours of tutored learning
Level 3 - 84 hours of study including 30 hours of tutored learning
Diploma - 600 hours of study including 118 hours of tutored learning