Yes, I agree...
However, its hard to solve these issues? At least I dont know how...
I cloned via load box - and to compare, I would of course love to just "bypass the hole amp" and have a power amp going into my cab. But neither that power amp nor the connection exist. Thats why I can compare only via a modeled box into my FRFR... For sure, that is not the same, but showed me, that the clone captured the general asnwer/sound and feel of the amp.
When cloning the whole chain íncluding Cab and mic... how would a fair/close/real comparison look like? I think, thare just is no other way than going into FRFR.. and this will sound different compared to standing next to an amp with cabinet.