to clarify with the brand/model names,
there's the
gibson grabber (out of production)
gibson thunderbird
gibson eb3
and well as the
epiphone thunderbird
epiphone eb3
today, gibson is the parent company of epiphone. epiphone is the subsidary or gibson. gibson sells a guitar for $3000, epiphone sells the same model with different specs for $700. which means gibson > epiphone, straight forward. for example, fender/squire.
the gibson grabber is a vintage model, and it is no longer in production. back in those days, gibson and epiphone were seperate companies