I believe the answer is:
Socialist: Equal results
Market: Based on supply and demand
Traditional: Based on traditions and customs
Communist: Government controlled
All of these economic system came with their own weaknesses. Socialist's weakness is that equal results do not incentives for people with more talent and more workhours to advance over the other.
Free market's weakness is that it provide many opportunities for corporations to conduct dishonest practice and creation of income disparity.
Traditional economy's weakness is that it does not provide room for innovation and technology to develop.
Communist' weakness is that it give higher chance for government to completely control the citizens and transformed into a tyranny.
