Why do people say he is 20k coupons? How do you obtain edo itachi for 20k coupons?

It doesn't mean people say he is 20k coupons they obtain it for 20k coupons .. Logic ..

About the topic, lets set aside the character bias opinions, Steve Carry is right with his explanation .. It is tactical and strategical formations when it comes to utilizing this ninjas .. Specially during Space-Time Battles .. My answer is based on my experience also, from the matches i got in 3v3, DB and Matsuri ..

Also, without speed, you cannot bait your enemy using Edo Itachi, just like the image above where he waited my main to cast skill before using his Edo Itachi, the result .. I got him Masked Man-ed and he retreats ..