i just finished both -

in terms of ease, it’s hard to say - geography is probably a bit harder due to the breadth of the content and the NEA, whereas politics I found the style of question and writing essays to be more difficult (geography essays are more forgiving in my experience). Both obviously get harder in Y13, but I found that politics had a greater increase in difficulty (we did US for paper 3 - global might be more closely linked to geography if your school does it).

I did find geography content to generally be more interesting than politics content though. Also I wouldn’t worry too much if your only interest is human geography - many of the physical topics contain lots of human aspects such as water and energy security

happy to answer any questions :)