It is not the same as 3724. If you're looking for it to be in your face like that, it's not going to happen. I took it up to 90F and it was still mild compared to the DuPont strain.
Belle is a strong attenuator that leaves behind more body than you'd think, and I think it's best just taken for what it is. I was hoping to get MORE flavor from Belle saison because it is such a great yeast.
My advice for getting the DuPont flavor without the pain in the ass is to try WLP566. I used that and didn't ever get above 76F. Nice flavor, good esters, finished quickly without stalling and no need to get crazy with the temps. I believe that is just a different sample of the DuPont strain.