It all depends man, on how the d-pseudoephedrine/l-ephedrine was extracted (if at all), how well/long a recrystallization(s) was/were performed using solvent(s) A and/or B and/or C, etc. The question you're asking serves no practical purpose anyway. Both products as the hydrochloride salts possess crystal lattices that both can be taken up in an infinite combination of solvent types and amounts and recrystallized in an infinite combination of recrystallization environments and parameters to afford crystals of virtually any size (in theory). So, to answer your question, the answer is neither yes nor no. It all depends, and crystal size doesn't mean shit in regards to purity or verification of a given compound.
And one more thing: just because someone uses rP in their reaction doesn't mean that there's a better likelihood that the outcome will be large, glassy meth crystals. If the crystal size varies in different reactions, that just means the dope makers aren't doing a good enough job, because manufacturing process is irrelevant to crystal size if it's performed correctly. Meth has its own crystal lattice that forms transparent crystals with white streaks spreading throughout. If crystal size varies, it means there's shit in there that indicates the cook isn't doing a good enough job (as is the case with 99%+ of 'em, I'm certain). Over and out.
