Pro Evolution Soccer (PES) was considered to be the most popular football game 10 years back. The gameplay was very good. After PES 5, however, the popularity of PES started to decline. Now FIFA 016 is considered to be better than PES. Here are the reasons why.
FIFA has more than 600 clubs licensed and 41 official stadiums giving more realism and depth. PES, on the other hand, has more than 200 licensed teams and only 11 licensed stadiums.
PES can be played for a few matches at a time. It has slow buildups and the controls are difficult to control. The gameplay of FIFA 2016 is faster than that of PES. Goals are more spectacular and the game is lot more fun. In PES, you have to spend a lot of time thinking how you will make your team members play. This is not the case for FIFA 2016.
FIFA is less detailed than PES
In PES you need to think of all the aspects of the game and analyze them. You need to find the gaps in the defence and try to exploit it.
If you are playing with friends then playing FIFA 2016 is more entertaining than PES. The action is more in FIFA 2016.
There have been some upgrades in the features of PES. More licenses are being bought; there is better graphics ands better action. Still, FIFA 016 is considered to be better than PES.