It's not just 3 fans vs 3 fans lol. It's 3x 60mm fans vs 3x 120mm fans, it's the sum of the area of the heatsinks (gpu cooler vs 360mm rad) , it's the efficiency quotient offered by the differences.
There's a very large difference overall in ability. Going oversized won't exactly mean temps could be very different, gpu boost will pump up the output when challenged, so you'll be running faster for equitable temps. If you happen to hit the ceiling, that's when you'll see a real temp difference.
As for noise, it's 3x fans covering a little over 2800mm each vs 3x fans covering a little over 11k mm each, in area. Speeds will be able to be considerably slower, therefore quieter.