If you have a single charger in your car, CHAdeMO is hugely, dramatically better. If you have dual chargers, it's still much more useful. If you have single charger and are thinking of getting the 2nd one fitted, the CHAdeMO is much cheaper and more useful.
Note that your car can't make use of the full 43kW AC available from those AC chargepoints. With a single charger, you will get 11kW (33 miles range per hour of charge), with dual charger 22kW (66 mph). With CHAdeMO, the charging speed is more variable, but under the best circumstances you will get 48kW (~140mph), more typically 38kW (~120mph).
But the raw numbers don't really make the point. For trips in the UK, most really long distance trips you can route via supercharger(s), and short ones you obviously don't need to charge at all. The challenge is out-and-back day trips of say 200-300 miles round trip where the diversion to pass a supercharger is disproportionate. For this sort of trip you are only looking to take on board 50-100 miles of charge, and with CHAdeMO that's a single lunch stop or a coffee stop in each direction. But with single charger, that's 2-4 hours, and even with dual charger it's 1-2 hours - which can't really be absorbed into natural stops and becomes a chore.
