I am not disagreeing, but I am curious as to why you have arrived at that conclusion.
The way I was looking at it is that they have NHL bloodlines which is something teams look at favorably in terms of evaluating whether a prospect can put in the work to be a pro. They both play for the London Knights, which tends to produce solid and well rounded prospects. I figured neither would on on London's roster if they weren't reasonably reliable players. They also both seem fairly mobile and can throw some big open ice hits, which is arguably more valuable than their ability to fight.
In addition, from the rookie tournament, Connor Clattenburg and Jackson Stewart were the only CHLers aside from Djibril Toure to get an invite to main camp. Are Clattenburg and Stewart simply significantly better players and prospects than the Boulton bros? If instead they are closer in terms of ability then why wouldn't the Boulton bros be given much consideration whereas Clattenburg and Stewart were?