The rooms at the AKL are almost identical to the WL rooms. They're both about 340 square feet which are the smallest Deluxe rooms at WDW. CL rooms at all WDW resorts are identical to non-CL rooms, except that they are sometimes located on the CL floor. However, at the AKL, non-suite CL rooms are not located on the CL floor. At the WL non-suite rooms
are located on the CL floor. They also have a Honeymoon Suite at the WL that has a whirlpool tub and king bed and CL access.
The WL has much better transportation options than the AKL since you can boat either to the MK or to the CR and then walk from the CR to the MK or monorail to the TTC to Epcot. You can even monorail to the Poly or GF for a bite to eat. FTW is also just a short walk or boat ride away. With AKL, you will have to take the bus everywhere or drive if you have a rental car (I see you're from England

).
The BC CL non-suite/non-Deluxe rooms are located on the CL floor. Those rooms are about 380 square feet so they are just a tad larger than the WL/AKL rooms. The advantages to the BC over the WL is that you can walk to Epcot and to the Boardwalk and even DHS (it's about a mile away). SAB (Stormalong Bay) which is a huge water park-type attraction shared by the YC and BC, is also a big draw. The BC does not have a quick-serve, food court-type eatery. The WL has Roaring Fork. There is also the price difference. The BC/YC CL water view rooms are about $90 more a night than the WL/CL rooms.
In general, the WL is a much more relaxed and quieter environment than the BC. I suppose it comes down to what your preference is as far as theming, price, location, transportation and room size. Have you considered a split-stay?
I hope this has helped and not made you more confused!