There's more to talent than dribbles. So LVG was smart for building the team around Martial, when we came 4th in a season where Leicester won the league and Chelsea were nearly relegated, but Jose is stupid for not building the team around him, despite coming 6th, with more competition and winning 3 trophies?
Yes there's more to talent than dribbles, but don't forget that he also scored 17 goals and made many assists in the process. He scored different types of goals and mixed his game to surprise opponents; he was our x factor and carried the team and practically won us the FA Cup and almost got us top 4. LVG won 1 trophy, but he didn't have a team with the most expensive and best Italian league player, best Bundesliga player, best french league player and one of the best defender in la Liga and only come 6th with this great army.
You claim Pogba can't do the dribbles Martial can, which is true, but Martial can't do a lot more as well as Pogba can. He can't ping the ball and find attackers in space, he can't shield the ball, he can't transition defence into attack, he's not as good at finishing from long distance, he isn't as good at intercepting, he can't read the game as well, his vision isn't as impressive etc.
Because Pogba is a midfielder and Martial is a striker playing on the wing. They both have differents qualities which suite their position.
What has Martial achieved to be considered a better talent than Pogba? Martial is nowhere near the French team whereas Pogba is arguably their talisman (along with Griezmann), Pogba has played in CL finals and was a regular for one of the best teams in Europe before you probably even knew who Martial was. He's a great talent but Pogba is our best player. For starters, Pogba doesn't need the team built around him to play well, we're still yet to see Martial adapt to the same circumstances.
Martial is not in the French team anymore because of last season, before that he was a starter in many games. And Pogba has achieved more because he is 4 year older than him and he played under a manager who trusted him; at Juventus they played a system which was built to get the best out of him and people always cry for Mourinho to do the same here.
You'd be very hard done finding many people who'd choose to keep Martial over Pogba if they could only choose one.
Understandable when you look at what happened last season; If Martial had the kind of season he put under LVG, the choice wouldn't be that easy for many who has short memory.