Sentry's battle with King Hulk can not be compared to a battle he would have with the Silver Surfer.
First of all the Silver Surfer's power cosmic holds no power over the Sentry, which is why I brought up Terrax. Terrax was impotent in his attempt to even faze the Sentry, and just because the Silver Surfer holds weight on Terrax does not mean that he would do a hell of a lot better than terrax did by blasting the hell out of Bob.
This power up that everyone is talking about has yet to be proven to have made the Silver Surfer leagues above his old self, what exactly did Galactus do to him? did he give him more power, or did he remove his inhibitions to use what he already possessed?
Galactus told Stardust who was stalemated by beta Ray Bill that should the Silver Surfer go rogue, that he/it (Stardust) may be needed to sanction him in the futture...... Now wait a minute!
Galactus made them both, and if he is saying that Stardust may be needed to deal with the Surfer later, this means that Norrin may be getting more hype than he deserves.
Featwise the Sentry has shown his resilience to the power cosmic, despite whether he is liked, or disliked.... as far as I'm concerned, the Sentry doesn't have to prove that he could beat the hell out of the Surfer, the Surfer needs to prove that he even has the power to affect Bob on any level.
The Sentry has feats under his belt that have shown that he is highly resistant to energy attacks, he was able to crush Terrax's hand with a smile, and stop his axe with one hand, while I can remember Terrax stating that he could have killed the Silver Surfer with one slice of his cosmic axe (The Morg vs Heralds storyline).
Evidence weighs more in favor of Bob beating the Silver Surfer than the other way around.... yes Norrin survived being smashed into a moon by Tenebrous, but this is not saying much. King Hulk shifted a continent, and was hitting The Sentry with mountain crushing hits, and the Sentry didn't go down. 😉
Like i said to begin with the Surfer can drain the hulk of gamma radiation and reduce him to his human form, he can not do this to the Sentry.