Look for what a list refuses to disclose. If there is no stated methodology, no date range, no explanation of what was measured and no way to tell paid placement from earned position, the ranking carries no information. Sales volume alone, even when accurate, tells you an agent has been busy, not that they achieved a good result for the particular seller whose situation resembles yours.
Reviews are more useful when read properly. Volume matters less than pattern and specificity: reviews that name the neighbourhood, the type of sale and what actually happened are worth more than a wall of one line ratings. Joel Dyck holds 72 five star Google reviews, and the useful test is whether the situations described sound like yours, not whether the count is large.
The most reliable check is a conversation. Ask for three recent sold comparables in your neighbourhood and the reasoning behind the price they would recommend, ask what your net looks like after seller closing costs of 4 to 6 percent, and ask how they handle a condition period that goes sideways. An agent who can answer those clearly has told you more than any list could.