Except there are a few added difficulties of EC that don't exist in DH due to the maths. There is also the matter of mapping your numbers to points on the curv

Except there are a few added difficulties of EC that don't exist in DH due to the maths. There is also the matter of mapping your numbers to points on the curve. Lot's of extra maths for saving time and space. The important take-away from the extra math is that, unless you are a cryptographer then you should leave the implementation up to someone else.