I know very little about Oklahoma but looking at the regular season stats, it was striking how similar the two teams are. Very similar goals for and against, win% (fairly close), goalie save%, PP & PK%, distribution of goal scoring, etc.
About the only difference on paper that might give the Marlies an edge is the Marlies were able to upgrade their talent a little better down the stretch with Gardiner, Ashton (currently hurt), Ready, Frattin & Lashoff's return from a season long injury.
Regardless, it looks likely to be a long tight series.
With St. John's winning today, the top two teams in the standings for each conference move on to the conference finals (The WB Scranton Penguins seeded 4th had a slightly better win% than St. John's). So no big upsets so far to help the Marlies cause.
Hopefully, I can see some of these games.