Based on the role of bass and there's no denying Jaco's talent,I'm not sure his style of playing as impressive as it was was what bass needed. Looking at what came before during and after I dare to suggest that James Jamerson's style of playing was more "useful" to bass and popular music in general. As controversial as that may sound. Just to clarify that I'm not a Jaco hater. Jamerson was an influence for Jaco and I can see why.