Cryogenation may have been standardized after the "2" models. I didn't bother to look it up before I posted.
The Supercells were really good bats. I'd take them over anything from Easton with the possible exception of the C-Cores (great bats) and the green/orange Bell Corp (really hot, but folded like a cheap tent). That said, I'd give an edge in performance to the TPS bats of that era. The old black and gold, black and orange, Advanced, Rich's, and Androff models all seemed to hit just a little bit better than the comparable Worth Powercells and Supercells.