HSK (& CLPS) vs CEFR

Just to make things a little more complicated/clearer(?!) I have included here a comparison of the HSK (& CLPS*) with the CEFR.

Theoretically, these two (three) frameworks should have the same learning criteria at each level – but they do not. Indeed, it has been suggested that HSK Level 4 is equivalent to CEFR A2. So the questions are – why are they different? where are they different? and should they be the same?

(*Chinese Language Proficiency Scales for Speakers of Other Languages)

I’d like to make a visual comparison.