unless you can point to a policy that says "Major contributions" is inherently POV then your crusade is ignorable. The man changed economics, mathematics, computers, evolutionary biology, business, war, politics, and diplomacy with a few brief papers...several reliable sources which can and will be used to interpret his works establish that. That, with the spectre of understatement, is a major contribution to those fields and the twentieth century. Until you establish it's inherent bias and a relevant policy interpretation held by the wider consensus of Wikipedia users, you're opinion is just an opinion, and an ill-informed one.