Yes, IMO there IS a difference between some of the enrty-level/econo rifles.
Some, like the Marlin X7 (and maybe another), have an adj trigger; the Mossy's have stock options, and IIRC some are available with a mounted (cheapo) scope as a "package".
Also, there are some stylistic differences, between various maker's actions and/or stock - For instance, some just don't like the way a Savage/Stevens 200 action/bolt shroud looks, yet others love it.
Sorta like friends.............................
.