Wanted to straighten out this old thread that never got answered. By the way, I'm terribly-sorry for my absence over the last year. Been dealing with some things.
To start off, the W*0 series models were created to satisfy the US/North American customers, who they felt wanted a bit more bass than what the UK/European models could offer. The first model in that series was the 2-way, ported W60, introduced in 1960 and named as such to commemorate the year. It uses a tweeter that is a variation of the Super 5 used in the W2, plus a 12.5" alnico woofer in a cabinet that is roughly the size of the Large Advent. The W60 later became a 3-way and went through various driver changes along the way, but the original was a 2-way with alnico drivers (I believe they started using ceramic magnets in that original 2-way in 1964, as that was the case for other W*0 models as well... It became a 3-way with the introduction of the W60C, which I believe was also the first Wharfedale model to use that later fried-egg-looking tweeter... The early W60D model used an identical-looking tweeter for a short time before replacing with that W*0D MKII tweeter that looks more-dome-like, but the W60C had a ported cab, so that's the easiest way to tell... But the original W60 used a cone-type tweeter, and for the first 3 years, used alnico magnets).
The 2-way, ported W2 has British/European origins, although it WAS also made available in the US/Canada through it's New York and Canadian distributors. It was part of the W* series (introduced in 1959 if I remember correctly), which also included the W3 and W4. The Airedale could be called a part of this series, although it didn't come out until 1961 if I remember it right (The Airedale was created to satisfy customers who wanted the sound of the huge 9ft Corner Speaker model without the gigantic cabinet-size).
The W2 has a SMALLER cabinet than that early W60. That's the biggest difference between the two. The original W2 uses the alnico version of the Super 5 tweeter. The original W60 used a variation of that Super 5 (You will see 2-way W60's with alnico or ceramic tweeters, depending on when they were made... I don't know if the W2 ever used ceramic drivers, but the original had alnico ones). As far as I know, the W2 uses the same amount of cabinet displacement as the Dovedale (1965) and Dovedale 3 (introduced around late 1968 or early 1969) models, which were basically an update/continuation of that original W2 from 1959. I don't think the W2 and W60 used identical woofers. They were both 12.5", but my bet is that the W60's woofer was tweaked a bit in some way. But the W60 had a bigger cab than the Dovedale-sized W2.
I hope this helps straighten things out for those looking for an explanation of the differences between the two models. They look similar, but if you saw them together, the difference would be obvious. Plus, the original W2 had that red ribboning around the perimeter of the grill. I don't think the Dovedale and Dovedale 3 (as in 3-way) had that look to the grill, but the Dovedale from '65 was ported, I believe, while the Dovedale 3 used a sealed cab. I believe the Dovedale from '65 used at least one alnico driver, but think it was a mix of one alnico and one ceramic driver. There is an old brochure of that Dovedale ('65) floating around online which has the driver info, so poke around a bit, and you should find it. I know I posted it in at least one thread.