I had a ClientCare ticket open and through my interaction with the agent, I found that counter eVars could not be segmented by the less than or greater than qualifiers for a segment condition. Instead, these qualifiers are meant to only be used with "Total (events)" as the condition, like Total Social Shares is greater than 1. I could not do a similar segment with Total Social Shares if I had a Total Social Share counter eVar increment "+1" on each share.
Since the values in a counter eVar are numeric, it would be incredibly beneficial to be able to properly group counter eVars based on values being greater than or less than a specific value or set of values.