The torture test video was interesting to see - given it went through full immersion and then being thrown out of the vehicle and cooked on the BBQ and switched on and worked seemingly fine is pretty good to hear!
Not that I'm about to go and do any of that to my One
My heart dropped when I realised what had happened, and they have proper solid tiled floors too. The nurse picked it up and... not a single mark, scratch or scuff to be seen. Impressive! I went to the dentist this morning and forgot about my (naked) One being in my shorts pocket. The dentist tipped the chair back and.... whack!
The HTC one does seem to be very durable!
) I would say that they aren't much, if any bigger than last years bezels, in fact I would say they are more or less the same as the S/X.
but it gives you a rough idea
TBF though, the bezels aren't really that big (in terms of the black borders, not the speaker cover areas
Compared to the GS 4, the side bezel of the GS 4 is much thinner.
I think it is just the speaker area and completely flat front (the one S and X had slightly curved bezels/edges) that makes the bezel appear stupidly big i.e.
Obviously not to scale
and the one X:
I would imagine that the durability is mostly due to the single piece of aluminium with zero gaps throughout (except for the speaker cover area) as well. Probably some good shock absorption stuff put inside as well.
And of course, the speaker areas are pretty large and you have more chance of the phone landing on the bottom or/and top end/corners so as you said more or less, those would be mainly taking the "impact/shock"
EDIT:
Plus when you look at the tear down tests etc., this phone was not made to be taken apart, at least not easily!
Not a great pic to show real bezel size. 
Thanks
Anyone think the battery bar is worth it? Also any of the official cases any good?
By bezels I did mean the speakers too.
And you do know that One pic is a 'chop right as the screenshot is not even centered
The one's black border could have been thinner but the speakers would have still made thin borders not significant enough.
It gives you a rough idea as to what I mean though! 
as looks go the one is simply the nicest looking handset out at the moment imo, otherwise i wouldnt have paid what i did sim free, after having a s3 and note 2 I doubt ill be going back to samsung in a hurry unless they totally revamp touchwiz, sense is so much nicertbh your edited photo looks very little different to what it actually does, you must have taken all of 2mm off
But in all honesty even a 1-2mm (at each side) would be a noticeable difference i.e. when you compare the one S and X in terms of one handed usability, you wouldn't think that there would be much difference but there is.
That's the thing - if you want front speakers you sacrifice small bezels.
Just can't have it all.
The One is still a very pretty phone - has a nice few touches like the shiny bevelled speaker grilles, curved back etc
Although I would be more than happy with the above edit in terms of bezel/speaker size!), nexus 4 and nexus one design! 
