My situation is somewhat similar to you, but probably to the more extreme extent.
As far as I can recall, in my early teenagerhood, I might just usually react in a no ticklish way when I was tickled by guys but react in a more ticklish way if I was tickled by girls.
This was the time that I started to get my primitive capability of resisting being tickled.
However, since my late teenagerhood, I've determined to become a sheer ler in the general sense, and accordingly become less enjoyable of being tickled by anyone (on the other hand, my capability of resisting being tickled have even enhanced from then on).
From then on, I've become fully repulsed by being tickled by any males. I'm not repulsed by being tickled the attractive females, but don't highly enjoy that either.
(In general, I don't enjoy being closely touched by many ppl, especially males, due to my autism)
Such a change throughout my growth might have it relation to the harsh change of my psychological state. For I'd become rather depressed since my late teenagerhood.
I may have somewhat released from the depression by now, but still in the process of releasing.
And a fact I'm quite sure is: I haven't experienced the outburst of laughing (or even giggling) caused by tickling for 20 years at least, even though I've noticed that I can still get the tickling sensation in a few parts of my body (where're the regular ticklish spots for most ppl).
This makes me wonder if I've forgotten the laughter caused by tickling...
So, based on the information above, I may assume that 1 or even 0 out of the 10 ticklers would make me laugh if they tickle me in the blindfolded way (just leave the 'possible' room for 1 of them)
On the other hand, based on my psychological condition, I'll be unlikely to let such a scene to happen on me in reality (this may be a bit similar to
@SirTristran )