I think this OL is probably better overall than the nineties OLines.
The interior is better across the board than the 92 and 93 teams. Nate Newton wouldn't start on this OL, IMO. Not even over Ron Leary.
Tyron would get the nod over Tuinei but not by much in my book.
The obvious weak link is Free at RT where they had a healthy Erik Williams in 92 and 93.
Larry Allen was added in 94 but he didn't start at the beginning of that season and only played a couple of games together with EW before EW had the car wreck.
In 95 they had to have been pretty good because Emmitt had 25 TDs; however, EW was never the same after the wreck. IMO 95 was not the best of the Super Bowl OLs.
The current OL will likely never have the extreme physically dominant individual player like Larry Allen or Erik Williams. Tyron, Martin and Fred might be as good overall as football players because they are great technically, but they'll likely never make the greatest DLineman of their era cry like a baby (Reggie White) or have DLinemen literally scared for their life.