AM,
With all due respect to your experience, on a ship (in many scenarios at least), you are effectively isolated, and therefore the only hope for your passengers. Help is likely to be hours away. Even if your emergency happened abeam a lifeboat or SAR helo station you'd be lucky to get help inside 10-20 minutes surely.
In an aviation evacuation, help is seconds away, and the time till serious fire kicks in is likely to be seconds away as well. You're not comparing like for like.
Fit pax off + aircrew off + firecrew on + 1 invalid off
will on balance be much less than
Fit pax off + aircrew attempt lift off, become casualties + firecrew on + lift off invalid + lift off several aircrew casualties.
With imminent fire / explosion likely, seconds count.
CPB