Totally different players, and will probably be used in different scenarios. I didn't follow much other than highlights of Deulofeu at Everton- has he exhibited any team smarts? Because there is a lot more to football than running at defenders.
Actually, he has. He had a strong tendency to ignore his teammates and go for goal though, although this behavior was mainly prevalent in his absurd amount of substitute appearances. He showed he has the tools to be a team player, but didn't seem particularly interested in swapping passes with 'stone legs' Lukaku and 'where did I just pass that' Naismith. And let's be honest here, if Pedro was ever capable of running at defenders he probably wouldn't be viewed so lowly by fans and management, who put him behind all of Alexis, Neymar, Iniesta, and even Fabregas.
And I suspect Lucho isn't looking at this as a one-year experiment. If he's building the team for future years, he wants to start integrating Deulofeu now- which doesn't mean an immediate jump to the top of the class.
Obviously he isn't, but he is well known for having a preference for developing young players and with two of our three front line stars being injured and suspended the opportunity is more open than it probably ever will be.