The connections field only shows the number of users you are directly connected to. To see how many are directly connected to you (so the other way around) you'll need to use CB Query Field to query for that information. Example as follows.
Query:
Code:
SELECT COUNT(*) FROM `#__comprofiler_members` WHERE `memberid` = '[user_id]'
Output: Single Row
Columns: Single Column
In the _comprofiler_members database table memberid is the user referenceid is connected to.