I want an acoustic guitar, but I also want to be able to line in to my pc. Do electric acoustics and regular acoustics sound the same?
Electro-Acoustics do have a different tone, comparable to the neck pickup on a Strat if you equalize it correctly, but you'd definitely get a better tone if you mic'd it.
Call me Callum

Current gear - 06 MIM Strat, '02 Epiphone Les Paul, Peavey Rockingham, Tanglewood TF8, BLACKSTAR★ HT-5 Combo, EHX Holy Grail, Boss DS-1, Arion SFL-1

Newcastle (and Port Vale)
are you asking if plugged in acoustic-electric gutiars (i.e. recorded) sound just like acoustic guitars?

or are you asking if there is a difference in the unplugged tone between an acoustic-electric and an acoustic guitar... as in no amplification... just playing acoustically.