For the results of a survey to mean anything objectively, the criteria have to be established at the front end, so everyone is voting as closely as possible within a set of guardrails.
In this case, we have many criteria reflected in the comments above, including:
- How good the player was at their position
- How many years he contributed
- When he played (and thus, how many rings he was able to acquire)
- His individual contribution to the team's success during that time (e.g. Butler vs. Samuel)
- How recently he played (primacy-recency, plus some posters were very young during 2001-2004)
And probably others. The results of our individual surveys are a reflection of how we prioritize these criteria.