In-form Ramsey teed up Serge Gnabry for the 58th-minute opener, before scoring his eighth goal of the season just four minutes later to seal the win and Arsenal's 12th consecutive victory on the road in all competitions.
"Let's not forget his career was disturbed by a big injury and you need to have patience," he said.
"After that people were impatient and put pressure on him when he had bad games, but I believe that was the turning point, when he was questioned.
"It is always an important period in the life of a footballer.
"Can you get back to basics and work harder? Or do you feel sorry for yourself and give up?
"When I saw him respond how he did I always knew he could come back that's why I kept faith in him. He has improved his technique and does not rush his decisions, for example his goal needed a good first touch and a quick finish, and he did not rush it and showed his confidence."
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