Ridden Nemesis more than any other coaster on the planet so very used to it. Yet still, on the first ride every season you'd almost forget the feeling of the sustained forces from the helix and the pull up into the zero-g . Quite a masterful element and my favourite part of the ride.
It's quite possible even the slightest difference can have an impact on how the forces are felt. The "intensity" of Nemesis seems to come from how sustained some of the forces are.
So it's likely more a perceptual thing than any tangible difference. My perception was the opposite as I certainly didn't enjoy it as much as old Nemesis, although admittedly it was early season and I haven't ridden it in weeks now. The tingling in the feet felt the same on the brake run as it always has. Not that it's a bad thing. Even if the science doesn't stack up, if it's being enjoyed more then that's a good thing because that's what it's designed to do, and therefore it's money well spent.