In all seriousness, I spoke with a maker of handguards a while back, and asked about the introduction of some vent holes because of my heatsink. He responded, that during the test phase this was considered, and data was collected with and without holes, and with and without heatsink.
His results showed a lower temp (think 20-30 degrees). with heatsink, and only 2-3 degrees lower with the vent holes. So the increased surface area made a larger difference than did airflow.
He offered to send me the test data, and I declined, but I do believe him.
As far as accuracy, I can attest that my ctr-02 shoots 1/3 moa in optimal conditions with heatsink, and handloads. I can't imagine it being more accurate without it.
Hope this helps in more of a BE way