No, I find the 901 is generally airier across the board. must be something going on there...
regarding V2 = tighter draw vs V1 airy, it must have been a fluke... i have one LR LongBarrel 510 V2 and the draw is stiffer, in a good way, but my 901 V2 are not stiffer.
I have been using the 510 1.5 HH.357for a month now and it works great. I ordered a HH.357 LR1.5 901 and got it about a week ago. It works great great vapor and flavor, but the draw is super tight. Is the 901 always a tighter draw? I never used a 901 atty before.
regarding V2 = tighter draw vs V1 airy, it must have been a fluke... i have one LR LongBarrel 510 V2 and the draw is stiffer, in a good way, but my 901 V2 are not stiffer.