I really feel like he's underrated . Every time I see him play he just proves he's really confident CB with good positioning , tackling , athletic ability overall ( not as strong as I'd like from my CB , but he makes it with speed and quickness ) .
I'll make some suggestions although I think this whole set needs work on most stats , I'll compare him mostly to Pique and base it on this season only , not on these past few games.
DEF - definitely should be low to mid yellows , every time he was called to play he does really well , Busquets sits at 82 , I'd say Bartra deserves at least that value , even today against Betis , his tackles were really good , and it's not only based on these past few games , he did so great earlier when he played on regular basis .
HEA- his heading ability is good , obviously much better than this 72 , he cleans a lot of crosses with ease , when watching him and Pique , honestly I dont think Pique is any better than him , easily mid green value .
RES - he's really aggressive when trying to get in front of attacker , he follows them almost to middle of the pitch and most of the times he gets in front because of his speed , although sometimes he just loses physical duel and he's left behind . 83 is decent value , but watching him he just seems to be more responsive than Pique , I dont know if its due to speed , but he's much more "aggressive" defender than Pique .
EP - his agility is really great for a CB , maybe it has something to do with his lack of weight , first thing on my mind was "he's just much more agile than Pique" , than I went on Pique thread and saw he is sitting at 60 EP , so really dont know is this value right or not , but among CBs , he's probably as good as you can be in terms of EP .
TS - easily above Pique , thats just so obvious , if Pique sits at 83 , Bartra can sit at same value , although I feel Pique needs a decrease . Batra's ACC is really good , when you watch him you cant really tell he's CB , today he had few runs with/against Cedrick , you really cant tell there's a 15 points difference , I mean , he's no high yellows ACC guy , but low-mid yellow is surely there .
Also this form 4 , I feel like he can sit at 5 , whole season whenever he was called to play , he played pretty well , even last season , there weren't any periods where he was great in one game and later so bad in other one . Solid performer whenever he plays .
He really needs this update , it was more than a year since last update and he really did improve in every aspect of his game except maybe BB .