One mitigating factor in my mind is that LMZ did not play together on the top power play unit for the Huskies - Stu Ostlund was inserted in place of Mayer, and Steve Jensen split time with Lyle. And as effective as they were with the puck LMZ was also capable of playing a much more physical style when called upon to do so, which Ross-Colp-Rice would have had a hard time matching.
It all comes down to what qualifiers you consider to make a line "dominant". If they were on the same roster, it would be hard to say who'd get the start.
PS - the biggest reason for the 3 straight title games for Tech was more likely the goaltending of Jim Warden and Bruce Horsch, which was head and shoulders above Ron Clark and Dave Versical.