I am not a fan of "crusade evangelism." Graham's own statistics indicate a 4% success rate -- 96% of those who "go forward" at his meetings never show up in church. The techniques perfected by American pelagian Charles G. Finney ("revivalism") are tailor-made for inducing false conversions.
Many of those who "go forward" are volunteers from local churches who are going up to take their places in front after the altar call. The numbers going forward during a BG event are misleading.