No, it says 'best'.
I haven't been on most of these, so if I were to pick only from what i've been on (and could therefore consider making my favourite) i'd only be tossing up between Tornado at WnW and Green Room at WWW. Out of the two, Tornado would win just as its more visually exciting to look at, although Green Room would earn bonus points for not needing to carry the raft. The green room theme was clever, but it didn't execute well, and it's like they purchased the default scheme of 'go away green' because it was cheaper.
If I were to pick based on what I know (the tornado experience is much the same everywhere, so its what you've done to 'plus' it that counts) then neither of the GC options comes close.
Perfect storm for me takes it - a long layout prior to the funnel, they plussed it by adding mini tornados along the route as well as the enclosure of the funnel and added AV effects, and given Kraken was the 'longest' at the time of opening at 270m, this 280m model breaks that as well.
Contrast to Storm's next door neighbour - Funnel Web, despite the awesome spider sculpture - for me is ruined by the long uninspired length. It's like they needed both slides to start at the same point for convenience, so they just 'autocompleted' the layout between the start and the splashdown. The layout (and from POVs) doesn't appear to be very inspiring or thrilling, and since the funnel is the payoff with nothing else in between, i'd rather they just got on with it - Tornado and Green Room both beat Funnel Web, purely because they get on with the job, and they don't feel like i'm living in 'Pleasantville Monochrome'.
I didn't set out to knife Kraken in this, but as I wrote Funnel Web above, I realised that much the same factors and issues applied to Kraken in the same way, so they can share the spot - i'll put Kraken a step above purely for the colours used.