Alright, I came across a quote that states Grant was likely the best player in Eastern Canada in 1896-
The Montreal Star said:
Eastern Canada probably does not contain a better hockey player than Captain Michael Grant. Captain Grant was born in 1874, stands 5 ft. 10 in. in height, and tips the scales at 170
It's one quote from after the Montreal Victorias re-took the SC from the Winnipeg Victorias (which they had lost in February- Grant being noted for poor play in that one), but this is definitive, primary evidence that Grant was at least considered by some to be the best hockey player in Eastern Canada, for at least some point in time.
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It actually has a little blurb on all the Montreal Victorias' players that played in the 30 December game (Mike Grant (cover point) Ernest McLea (forward), Graham Drinkwater (forward), Robert McDougall (forward), Shirley Davidson (forward), Gordon Lewis (goalie), and Howard Henderson (point))
At the risk of discussing an ineligible here, I'm going to transcribe the Bob McDougall bit so I don't forget about it-
The Montreal Star said:
Mr. Robert McDougall is only 20 years of age. He is 5 feet 6 1/2 inches and weighs 158 pounds. He in common with many hockey players learned the game at Lennoxville school. For three years Mr. McDougall has played with the senior Victorias and in that time has made a well earned reputation as an expert hockey player. He is sure footed and quick and as a scorer he has a record which is perhaps unsurpassed on the team.
EDIT- It looks like the Montreal Star version is a less-complete copy - though not word for word- of what was written in the Winnipeg Tribune on 31 December 1896.
Interesting tidbits of the Mike Grant section go as follows:
The Winnipeg Tribune said:
Captain Michael Grant is undoubtedly one of the best known hockey players in eastern Canada. Among the younger generation of players in Montreal his has been a name to conjure by
and
The Winnipeg Tribune said:
Captain Grant is undoubtedly a tower of strength to his team. His keener critics said that last year was an "off" year with him, but, whether that be so or not his work this season has been fully up to his old standard. He has body enough and pluck enough to stop any rush and is himself quick to take the aggressive when the occasion offers. As a captain he has few superiors for he is cool, even to a fault, and knowing his men thoroughly he is well aware of their capabilities at all times
EDIT 2- Re-reading the player blurbs again, it looks like they were originally produced by the Montreal Herald.