I think it has more to do with the less-tangible features of our operating environment. The electric power is dirtier, the track is worse, and the maintenance regimen is not nearly as rigorous as the European environment these were designed for.
I'm not a fan of buying anything from Russia or China, but both have fully developed electric locomotive lines that are designed for similar conditions. Strictly from a technological standpoint, it might make sense. I'm not sure if either nation is ready for prime time in railroad equipment export, I know the Argentine purchases of Chinese equipment have been less-than-stellar and the Chinese maintenance mentality is more like a prewar US mentality. Big back shops make everything. Also, it's politically untenable.
So we're back to square one. I think the real solution is to upgrade the power on the NEC, but that's a tall order.
The new Acela: It's not Aveliable.