Endrick has had very little game time this year, just like Neymar in 2009, so it's hard to say who was better at 16-17. Neymar started playing constantly in 2010 and had a massive impact immediately. Next year we'll be able to respond better, but, unfortunately, Endrick will stay here(in Brazil) just until June/July.
But, analyzing the small sample we have, Endrick showed better game reading(I'm not sure if you use this expression in English) and vision than Neymar at the same age, but nothing close regarding dribbling. Both are similar in finishing.
I can't post media, but I recommend you to watch his all touches against Santos on youtube; it was a good display of his all-around skills.