Microgrammage is way underestimated and overadvertised.
So more like 2 grams of mushrooms for that ~80 ug imo although could be 200+ ug for the 3.5 g, those different curves definitely confuse and muck this whole thing up...
At lower dosages mushrooms seem to be more dramatic relatively speaking, it seems to take quite a long while / high dose for LSD to become really vicious and devastating but when it does it can be at least as fucked up if not more. IME mushrooms just make you white out though if you go that high.
Another big problem for this question is what you assume to be normal for one tab of LSD. In many places the average actual microgrammage on a blotter tends to be surprisingly low, while locally it may be pretty high (knowing the right scene / circles). Mushrooms are natural products and the potency can be all over the place but not really from human intentions like deciding how much LSD to lay per blotter.
It's pointless to try and make comparisons if you are guessing rather aimlessly at your reference.