Just watched your Fallout video. Luckily for you, I don't know ANYTHING about Fallout and thus never watched another video. So I can't compare it to another Fallout 4 video. But nevertheless, I shouldn't have to if its good.
And it is.
Hell, I'd even call it great. The content is great, nothing to spit your cola out at, but its not something I would get bored with. As far as technical side, the background noise in the beginning was very apparent. The jokes really did hit home for the most part. Some things I would change, is the fact that your "slide show" bit wasn't really a slide show, but just photos changing. Usually, a good trick to make it realistic is to have a little black space between the photos, like a real old timey slide shows. Also, even if you don't believe you have a good camera presence. The only way to really improve is to keep doing it. I would switch between yourself and the video much more, especially if you want viewers invested in YOU and not just to watch a video or two.
It's a shame that such a great video doesn't have an enticing thumbnail (in my opinion). There's no bright colors to draw attention to the eyes. There's no face to entice the viewer in. You know when they say substance over style? It seems like there is a 90-10 split between that because while this is a RIGHT thumbnail, it isn't a very ENTICING thumbnail. Imagine this. You're not really on the search rankings, so if you were, would this be the thumbnail that your audience would click? Even if you aren't a graphic designer, (or have no many for the software or people to make it for you) you seem to carve out your style. You just need to flesh it out more.
As far as the rest goes, you gave me 13 full minute of material, which is fantastic. Most reviewers who hit near the 15 minute mark have around 8-12 minutes and lots of filler. The end card needs some major, major work. Also a small complaint, even though I can differentiate the words in your end card doesn't mean everyone can. You may need to use another font or space that one out a bit more.
You're very calm and informative, so you should embrace this. Show me some facts! Throw interesting text in the video! When I see you, I can see someone of authority, who knows about their niche of games. So yes, even if you may not want to be on camera, it's these small appearances that set you apart from people who completely disregard the thought of putting themselves on camera. So just to recap, your technical side needs some work (sound, thumbnails, end cards and general editing) but your content side is spot on (script, jokes, length).