if you think i'm lying go rewatch Arda Vs Hercules from last season, you'd destroy your monitor
For some time, Arda played better than Neymar as a LW (me and Neyhaters, for example).
A team played more fluid, kept the possession more, had more control, played more like Barca and we were winning 4:0 on average.
If you expect crazy skills, crazy dribbles and Omg moments, then Arda sucks as a Lw.
If you are satisfied with Pedro level displays as long as a team is playing fluid and dominating, then he was very good.
Deulo probably has way more skills, but also, with him and Neymar on wings, don't be surprised if majority of our actions will end in 10-15 seconds either with an awesome assist or with a lost ball after dribbling attempt through 4 defenders.
Each playing style has pros and cons.
Guys who love control and possession will say that it is better when we keep the ball and waiting for a perfect moment to make a final pass.
Also, we are less prone to counters, since logically, we are keeping the ball all the time. And our midfielders don't get tired too much.
With run and gun football, like in the last season, you get more dangerous actions when a winger dribbles successfuly past opponents (but that doesn't happen more often than 1 in 3 or 1 in 4 actions). But in other 3 out 4 actions, you get lost balls, counters against your team, chaotic system, wingers needing to run like crazy up and down 50 times per match to recover a ball which they lost too easily, our granny midfielders running up and down all the time to recover all those lost balls and to prevent counters and then having to run up again to make themselves available in our attacking action (which will again be finished in 15 seconds after a crazy suicidal winger action through 4 defenders).
In short, it is not that simple that Arda is a horrible winger, that wingers who are good in dribbles are awesome, that the worst kind of Deulo will be better than Arda/Pedro type of a player for our team etc.