Unbelievable, Namor has fallen from space. How about getting a mountain on him? http://img24.exs.cx/img24/1909/mountainfall8zx.jpg
Could Namor swim while holding up an island?
http://img146.echo.cx/img146/2374/island2a8xc.jpg
Does he have infinite strength?
http://img145.exs.cx/img145/1226/beyonder6ca.jpg
Is Namor able to destroy a city with a single stomp?
http://img19.exs.cx/img19/6295/shockwave15ag.jpg
I think Namor wouldn't be able to withstand four nuclear bombs.
http://img226.echo.cx/img226/1403/d...itynuke25as.jpg
And as a final endurance feat he jumps into anti-matter.
http://img39.exs.cx/img39/8765/dura...timatter4fg.jpg
Grey Gargoyle stopped The Mighty Thor like this, but guess what happened with Hulk.
http://img130.exs.cx/img130/6466/GGargoyleHulk.jpg
Hulk is being consumed by a symbiote and still he goes on for weeks without rest.
http://img128.exs.cx/img128/5642/Stamina4a.jpg
I know these are not going change your mind, you're to deeply into Namor. Namor for sure has great powers and extraordinary fighting skills, but that nothing Hulk hasn't faced before.
Wolverine has better skills of martial arts and has healing factor, but he still was defeated by Hulk regardless of his berzerker state and skills.
The Invincible Iron man has several gadgets able to devastate some of the greatest heroes and villains in the world, but still he was torn apart by Hulk. Why is that? Hulk is superior in fields of strength and endurance (Ok, of course not the toughest, but way over Namor's head).
The Mighty Thor, the God of Thunder himself has battled Hulk and has been defeated even though he summoned everything he could. Mjolnir and Thor weren't able to stop The Incredible Hulk.
The Unstoppable Juggernaut faced Hulk. Juggy, who is incapable of feeling pain or suffering an injury stalemated Hulk. What would Namor do to the Juggernaut? Beg for mercy?
Hulk defeated Maestro. Maestro is a genius, more powerful than normal Hulk and had even more experience. Still he couldn't cope with the rage of the original Hulk.
Hulk managed to move the immoveable Blob. Effortlessly.
And finally: The Hulk matched with perhaps the most powerful (physically) being in the universe, Drax the Destroyer who had the Power Gem and they stalemated. Drax simply couldn't outpower Hulk.
There were strength feats, speed feats and endurance feats. Need I say more?
(Ja kyllä, Suomesta.)