I think what's better than the usual hypothetical scenario of taking a player's gear from them and giving them a Squier would be if you were to take a given bass player and listen to them on their "signature gear," say David Dyson, playing his Skjold, through his amp and pedals, with his settings, and then you hand that bass to a hypothetical, competent bass player with remarkably similar technique and physiology, and back-to-back, listen to the other player, playing the same piece of music, the sound will be completely similar, not 90% different...or 60% different. Given the proper hypothetical player, the signature sound would surely be indistinguishable...it couldn't help but be.