I recently bought Todd's ###### 4.0L ets 3794 motec gtr from the previous owner last month. The car made 1450 whp on e85 and I believe 1640 whp on e98 which is very similar or if not slightly more than the A16's since the ets3794's are slightly bigger than the A16 turbos. Kisco ran this car at tx2k at the roll race event and beat it. If the owner of this 2R is around the tampa area i'll do it, however there are multiple videos showing 2R's beating A16's so I don't know the point exactly.
I'm also a gallardo owner(soon to be 1r or 2r) as well, so i'm aware of whats realistic. From the videos i've seen and from just the stats alone, there's no way a 1600whp 1/4 mile car will hang with a 1750+ whp roll car. In my opinion its gonna take at least a 1900+ whp gtr to pull on a 1750whp ttg up top.
Remember, this is an opinion coming from a gtr owner. The facts are the facts....the gtr's either need to find more power or get taller gearing. If the owner is around tampa pm me, i'd love a ride in a 2R on kill to see if I want a 1R or 2R.