First, malgrès identical external appearance, interior components are completely different.
One of the adapter consists of just 4 elements: 2 capacitors, 1 78L05, LED and resistance.
The current that comes out is very clean 5V.
However the latter is much more "full", there is a chip that controls the voltage, and a 15aine components in all. The voltage is 5,62v on this one. Amazing.
It's pretty funny the difference in complexity between 2 BUT HAVING REGARD TO PRICES AT WE SELL, we can not really pleindre. (A good adapter of the Samsung brand costs 18 ...).
AT YOUR OWN RISK