You have to admit, more than 10K clickthroughs has to look really funny. I’d bet that after an analysis of the clickthroughs, what is showing on ps2.htm is the remainder.
Any source of 10K clickthroughs is definitely going to be analyzed with a fine-tooth comb, given that Google probably doesn’t deliver that much on a single term in a month unless you’re #1 for your highly popular keyword.