Not 3 consequtive good years, 3 years with periods of greatness, and periods of struggling to beat Barichello etc and periods where he just didnt turn up in the race , like Korea 2010, so not 3 consecutive years of greatness, 3 years of the old Jenson - patchy performance, good when car is perfect
Now his career spans 13 years so if we assume 3 half years of greatness, it could be argued that unless the car is perfect and faster than the rest (like first race this year) then Button has not changed much over the last decade, good when car is perfect, otherwise cant find grip, balance, baffled by poor quali, races where he doesnt score any points despite a perfectly healthy car