Jonathan and Bouchard wasn't a mismatch at the time - Bouchard was a kind of no nonsense defenseman that didn't fight much but had good size and could go... He fought Dave "the Hammer" Schultz three times, (1 loss, 1 edge and 1 outright win) and the Hammer said this:
To this day, Schultz says that it's still the hardest he was hit in a hockey fight. Doesn't get nearly the press that Robinson or Gillies fights get on here.
Bouchard also tuned up Ted Irvine pretty badly as noted here:
Bouchard also dropped Bobby Baun of the Leafs in a brawl.
Rick Ley came in third man to save Baun.
Bouchard also handled Cashman in a bench clearing brawl with the Bruins. Beat him badly enough that
Dave Forbes jumped in as third man to save Cashman. Video is on YouTube. Add wins over
Gord Lane and a beating of Keith Magnusson and you're not dealing with a blushing violet. He was just a good honest defenseman that didn't fight often but was good when he did go...
As far as Jonathan goes he was decent but not unbeatable going in to that fight. Schultz got the better of their toe to toe scrap the year before. Jonathan did drop Hillworth and had wins over
Jerry Butler and Moose Dupont and an edge over
Danny Gare. But he also lost a slight decision to
Larry Robinson in a quick one and basically quit on the fight he had with
Kurt Walker after Walker hit him with a few short hard lefts.
Don Cherry's viewpoint:
Jonathan just switched hands and caught Bouchard big time. I thought Bouchard was winning the fight up till that point. The last shot Jonathan throws straight down on the ice is vicious - I think that's where most of the blood comes from. I definitely wouldn't consider it a mismatch at all though.