On par, _but_ a big difference is that because all alerts are sent as an equivalent to Presidential, it actually disobeys many settings associated with them (including, ironically, a checkbox for AMBER Alerts to begin with, and the Severe/Extreme tiers), plus the Canadian version of this system also uses a completely different alert sound that actually makes the U.S. one for mobile look sane. Look up tests of Alert Ready (which is the overlying brand for all implementations of public alerts in Canada, which applies to television and radio as well), and its more like a very annoying siren than a
The entire Canadian system appears to force the highest impact of presentation for any alert, with no room for a graduated system, to the point where the specific "style guide" for the TV system actually mandates that they always be presented as white text on red background.