Won by x runs means "If Canada bats first and puts 150 on board with 151 being the target for the other team and if that team fails to score the required 151 and for example gets bowled on 120 short of 30 runs therefore, Canada is declared winner by that margin.

And if for example Ireland scores 150 and Canada chases that down at the cost of only 5 wickets then they will be declared winners by the remaining amount of wickets.

Hope I did not make it more complicated.