The output for that LED peaked at 6.5A and the specs only recommend max 3.3A anyway (but manufacturers always underrate the LEDs so they last the advertised 50000h when on 24/7), so the GA will be more than enough.
There is no way 35A is the actual CDR. From the capacity I believe it’s a Sony VTC6A 18650 [warning: link to vaping forum] CDR is 20-25A,a good cell for high current uses but overkill for this.
Edit: In this review the turbo tested at 4.5A, no PWM was detected, that sounds like a constant current driver. If you plot the GA and the slightly inferior VTC6 (the VTC6A 18650 was not tested there) at 2A (from the 1.4A high mode), the GA will last 10% longer before reaching the the 3.2V battery saving threshold. If a high drain battery makes any difference it’s unlikely to be visible, the VTC6 has a 0.1V advantage at the beginning but the turbo stepdown looks thermal, not voltage-related.