Well I wasn't trying to compare wet to dry weight, that just doesn't make sense. But 2g freshly dried (I mean by that, dried recently and gently, such as by putting them into a sealed chamber and pumping it down with a vacuum pump, )
2g of freshly prepared cyans (dry weight) though is quite enough to give someone an ass kicking if they aren't expecting a strong trip. They are some of the most potent of the Psilocybes, IMO. I've both had it happen to me, and seen it happen to someone else, where we picked quite a substantial amount (enough to need to go to a nearby mcdonalds and beg some free empty happymeal boxes, and take two of those cartons a piece, for two of us, to fit a harvest) after relatively moist weather, so they were hydrated, and in cleaning them and getting them ready to be sporeprinted to weed out anything not so benign and beneficient as a Psilocybe, just cleaning the things with tissue we both absorbed enough psilocin/psilocybin through transdermal exposure to last maybe 20 minutes to a half hour before we realized it had come on properly and we were both tripping pretty decently, eyes as wide as fucking dinnerplates and the walls were breathing funny colored weaving mists and wobbling and occasionally, pictures on the walls would shed tears, etc. and do other weird stuff
Neither of us had partaken of any, since our objective at the time was just to clean them and get them ready for printing and diagnosis (the other party wasn't a mycologist, and as such it was up to me to make sure that what we were to be taking was exactly what we thought we'd be taking and nothing other, so I warned her not to eat any fresh because of the potential for a Galerina to slip the net if she had) But when we took them, tried them at 2g and it was really, really strong. 3 was a white knuckle ride, and 5g was...well there aren't really words that describe what 5g of freshly dessicated Psilocybe cyanescens will do to somebody because language doesn't really apply in any conventional sense to describe the kinds of perception changes in any more detail than 'perception changes' and 'hoooll-eee sh-IT' along with a comical sort of springing noise in the background twanging like a plucked cosmic string mounted on to a down-tuned space-time doubleneck bass/guitar, vibrating and sounding a chord that no physical ear could hear, or mouth could speak of.
Haven't taken cyans above 5-6g freshly dried and not long stored, it really did slap me sideways though. With a fork. A purple fork covered in little dancing furry beetles that insist on swearing profusely.