Yes the more I think about these lists the more frustrating they become. Woodhall Spa, I had such high hopes and was perhaps the most disappointed I've ever been in a golf course. Of course that's personal but there is in my opinion no way it could be in the Top 100 of UK and Ireland let alone top 50 in the world. If it's that easy all you have to do is design nearly the same hole with the almost identical tee shot on more than half the holes and you've made the list. Sure the bunkering theme of the bigger the better and "we have cool ladders" is fun as long as your not in them. I was not. Sure it's long from the very back sticks and definitely demands nearly the same precision tee shot all day but personally that just doesn't do it for me. There are just so many better courses over there and I'll stop while I'm ahead before I get to courses outside the top 20 in the US. Again just opinions and like any other idiot I've got my own.
However, if I was putting the list together (and I'm clearly not) there would be very few non-sand based courses on it which would mean all the worlds best courses would either be on links, heathland or sandbelt with a few occasional exceptions.