I agree it looks a little odd, but that said, the detail looks very good on the coin which in my experience isn't usually the case with fakes.
Under the Queen's head it should have IRB (or less likely for 2015, JC). The Edge inscription should be "Standing on the shoulders of giants", and should be centred well, not offset to either side.
The reverse of this coin should have all cogs well formed and detailed. In forgeries, the cogs appear somewhat more rounded and less defined, and the design in the centre circle is normally far less detailed than that displayed by the genuine coin.
The forgeries dated 2015 are considerably better than their earlier counterparts, and actually get much closer to the correct weight, so weighing it possibly wont help.
Seeing decent resolution images of obverse, reverse and edge inscription would definitely be better than a video.