I always knew it would come down to this match up. I mean it doesn't get any better than Hulk Vs Goku. Two true heavy hitters collide in what I'm sure would be a very physical match up.
There is no question that both have freakishly brutish strength when it comes down to a one on one fist fight. Whom has the advantage? I can not say. I would say Goku,depending on which transformation he's fighting him in, though I wouldn't count Hulk out ether. I'm sure a direct blow from Hulk would be enough to rattle the almighty Super Saiyan. For sheer force,its as evenly matched as one could get.
In the speed department,Goku has this one no question. Hulk is fast for a big guy but Goku moves at speeds that the human eye cannot follow. Even for some of the highly trained fighters would have difficulty keeping up with Goku at higher levels. Plus every time he does transform its not as if he sacrifices speed for strength. He gets bloody faster and bloody stronger as well. When I look at Hulk,I see a big,huge,massive muscly mountain of pure green rage. Now if I recall,as Trunks was fighting cell,he couldn't keep up with Cell's speed as his muscle mass was just to great,it impeded his speed to the point where he had no hope in winning,let alone landing a blow. I'm not sure if this would apply to Hulk at all but I'm sure its worth noting. You can't defeat what you cannot catch.
Another advantage is for Goku his his warrior mentality. He spent his whole life in combat and is arguably the most well round fighter in this tournament. Hulk is a mass of pure rage,there is not much thinking going on in that head. Hulk would need to think and strategies if he has any hope of combating Goku's warrior like prowess. Goku's has fought people who let their own rage consume them to to point where they can't think straight enough to fight. Both Nappa and Vegeta come to mind.
The only time he moves at lightspeed is when he's using instant transmission, otherwise he is only hypersonic. Flash would be significantly faster than Goku, even as a SSJ3.
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What about S.S 4? I don't see why anybody hasn't brought that up yet. I mean,he as that ability as well. We are discussing Goku,not just the Goku who appears in the Manga. It would be safe to assume we are including all canons of Gokus character here. Just like its safe to assume the same for Hulk and not just Hulk who appears in the animated shows,per say.
I'm still not sure. It would be a close one. I think it would be wise for Goku not to turn this into a brawl. Focus on energy attacks,wear the big man down. I'm not sure is even a full powered Kamehameha wave would be enough to stop Hulk. It would surely slow him down a bit,buy Goku some time. However,if Goku's chooses to do that then much of his energy resources will be depleted,leaving him open for a ass whooping from Hulk.
Why not a Spirit Bomb? I can assure,Hulk is far from being a pure being and would definitely be susceptible to such an attack.
Goku just needs to use the solar flair to blind Hulk,get to a safe distance and power up for the attack,Hulk has no way to sense Goku's whereabouts so that also plays into Goku's favor. I mean its the same tactic he used against Vegeta...though I wouldn't say it exactly pan out for Goku the way he'd hope so. So who knows.
Then there is the Super Dragon Fist. A mass of pure energy that would be able to rip through just about anything. Hulk's skin is tough but from an attack like that,I'd be amazed if he survived at all.
Like I said,it would be a close one and a very interesting fight I'd actually like to see played out. I do,however think Goku just has way more advantages over Hulk that Hulk does over Goku. Though mu opinion remains open for interpretation so I withhold from casting my vote just yet.