But your comparision is based on two different cars T_T?
And your comparison is based on what? Brand new PS3s replacing worn out PS2s? Most brand new tyres, even shyte ones, will perform better in the wet when compared to old tyres on the tread wear indicators.
But yes - they are on two different cars - but then those cars have tyres matched to their overall abilities. The GTI comes standard with 225s (and I upgraded to 235s), and my RS4 was standard with 255s (now upgraded to 275s). The new PS3s are on the GTI, and the new PS2s are on the RS4. The other important issue is that the wider the tyre, the more prone they are to aquaplaning - so my monster 275 PS2 boots on my RS4 should be far more prone to aquaplaning compared to the narrower 235 PS3s on the GTI - but the opposite is occuring.
I initially thought it might have been a dodgy batch of PS3s, and advised my local ATS (who I generally use, and who are owned by Michelin). ATS initially advised me they also never heard of any aquaplaning issues. I'm now on my second set of PS3s (different batches - I'm rather anal about checking and recording batch codes - I do the same with my oils) and they are exactly the same - and ATS are now confirming they are getting a few others who've advised them of similar aquaplaning issues - in standing water.
Personally I fully agree with michelin's own comparision:-
This is based on running PS2 and PS3's on the same car
Marketing and statistics. Just remember what Mark Twain said!
And do you have a link to the specific data? I'd be interested in how deep the water was on their 'wet' tests.
Oh, and just for some balance - I don't agree with that diagram for dry handling and dry braking - I would personally state that the PS3 is noticeably better than the PS2 in those two measurements.