Sure, it can be compared, but it’s not a one-dimensional comparison to my eyes—you’d have to pick a dimension of security to compare to get a proper ordering.
For instance in this case it seems like the iPhone has (considerably) more hardened hardware for many scenarios where you lose control of your phone. That’s not the only sense of security people care about. From the perspective of securing the phone from doing unwanted things without your permission, you have to trust Apple entirely to make the right decision. If you don’t trust Apple to make these decisions, the phone does not reflect a secure interaction.
For instance in this case it seems like the iPhone has (considerably) more hardened hardware for many scenarios where you lose control of your phone. That’s not the only sense of security people care about. From the perspective of securing the phone from doing unwanted things without your permission, you have to trust Apple entirely to make the right decision. If you don’t trust Apple to make these decisions, the phone does not reflect a secure interaction.