MJOLNIR can travel across dimensions and travel at light speed. Not to mention all Thor needs to do is summon it back and it will return. It is not an easy task at all to keep Thor without MJOLNIR.
And with MJOLNIR he can match Surfer's versatility and soak PC blasts thrown at him and redirect them back at him with double + it's original strength.
yup thor would have no problem absorbing Surfers out put of energy.
http://img372.imageshack.us/my.php?image=thor300315up.jpg
mjolnir i believe also has an enchantment to always return to its wielder no mater what. much like the time eric masterson was thor during the IG. mjolnir was teleported by thanos to who knows where and it returned to msaterson just in time to save him from a pathetic death in space only to be smashed by thanos 😆
but still, odinson for the win.
Personally I've always considered Surfer to have a SLIGHT edge in the versatility department. Don't get me wrong it's not a large difference by any stretch of the imagination, it's just that Surfer has shown a finer degree of control over some of the more exotic abilities to share. For instance, both of them can transmute matter but Surfer can do it in a far more precise manner(like when Surfer creates complicated machines and devices) or when he tied Lunatik's physiology to a planet to keep Lunatik from escaping it. By the same token, Thor lacks any of Surfer's psi abilities and Thor's lost his ability to time travel, while Surfer's ability to manipulate time is still intact.
Here's an interesting post by Autumn Imp
"Okay, having looked over quite a few of my books,I just want to post some info about the title subject. Particulary given that it's been recently touched upon that the Silver Surfer that faced Thor in SS Vol 1,issue 4 was supposedly depowered like five times.From what I can tell,it was twice.Once in FF #50(original,courtesy of Galactus.)And second was in Fantastic Four #72 via the sonic shark device.
Issues FF #74,FF #76,and SS Vol 1,#2 were not separate depowerments,far as I can tell from a flip through.But rather,references made by Norrin to the FF #50, and just possibly, FF #72. If there are specific details within,feel free to say so.Same with any retcon issues. Though I am not aware of such.
The fight between the duped by Loki Surfer and Thor occurred in Asgard.Beyond the barrier of Galactus. Therefore,Surfer would have had access to ambient energies of the cosmos as Asgard is,of course,not only beyond Galactus' barrier,but also earth's ozone layer. (Scan from SS Vol3,#1)
So,in the end,what are we,from some issue look through, dealing with in this case? A Surfer that was just possibly still being affected by the sonic shark,but also was being amped by Loki.And,as the first hand word on his level at the time,let's hear it from Norrin himself,from the very issue the fight took place in:
Panel taken from :
For review,from the same issue, Norrin's words about the hammer vs his cosmic power:
Panel from:
And Thor was holding back,Surfer thinks to himself:
Panel taken from:
This isn't to say things can't change over time.Or that said meeting is the only thing that matters in comparison of the two,cause it isn't.But in regards to the details of this particular meeting, Norrin's words seem to tell readers that he wasn't hugely depowered many times over upon facing Thor.Quite to the contrary, it seems.
"